- Holders Manchester United safely through to the fourth round for the ninth time in 10 seasons
- Marcus Rashford nets twice inside the first 17 minutes at Old Trafford
- Jesse Lingard adds a third thanks to a massive deflection off Ben Turner
- Anthony Martial slots home the fourth goal on the hour mark after being teed up by Rashford
- Lloyd Dyer fires in a very late consolation for Burton in second-half stoppage time
- Leroy Sane scores either side of a volley from Claudio Yacob to seal Manchester City's progress
- Hal Robson-Kanu strikes the post in the 94th minute for West Brom
- Earlier: Arsenal 1-0 Doncaster, Chelsea 5-1 Nottingham Forest
- Fourth round draw as it happened
Both Manchester clubs safely progress through to the fourth round of the 2017-18 Carabao Cup.
That is it for this particular live blog, but stay with us for live coverage of the draw.
Goodbye for now.
Dyer grabs a last-gasp consolation for Burton from close range after an almighty scramble in the United penalty area that came after Murphy's header crashed back off the crossbar.
That it is the first goal that United have conceded at home since May.
Murphy brings down Lingard and Martial's curling free-kick from 20 yards out grazes the side netting. That was close.
Dyer has not been involved too much since that impressive opening, but he pops up five minutes from time to fizz a powerful effort over the crossbar.
Someone has also thrown a shoe onto the pitch, for some reason.
Martial comes within a whisker of adding a fifth under serious pressure from Naylor, but his low effort flashes across the face of goal and narrowly wide of the far post.
West Brom weren't level for long. Shortly after spurning another chance of their own, the Baggies allow Sane to impressively curl home his second goal of the night on the counter-attack.
Is there another twist in the tale to come?
A final sub from both managers. Clough withdraws Akpan in favour of Akins and Mourinho swaps his goalkeepers by sending on Pereira in place of Romero, who has not been unduly troubled for most of the evening.
Martial goes down in a heap but the referee rules that Naylor's last-ditch sliding challenge was legal.
Lund whips an inviting right-wing cross around Shaw, but Lindelof does enough to ensure that Akpan's header does not come close to threatening Romero.
We may be looking at extra-time at The Hawthorns after West Brom draw level with less than 20 minutes of regulation left to play.
An unlikely scorer, Yacob smashes home a volley from Kieran Gibbs' corner. All square.
Warnock cynically scythes down McTominay and joins Akpan in the book. United could have been in on goal again there.
Evidently not satisfied with a 4-0 lead, United come forward once again. However, Herrera is unable to collect a pass down the left channel from Shaw and Burton win a goal kick.
A standing ovation for Rashford as he makes way for 20-year-old academy graduate midfielder McTominay.
Rashford looked to pick up a knock while setting up Martial's goal and heads straight down the tunnel. That is certainly a situation to monitor before Saturday's Premier League trip to Southampton.
Tony Martial scores again...
The Frenchman slots home a fourth on the hour mark after another incisive passing move initiated by Lingard.
Rashford provided the killer pass after getting the better of Naylor. All too easy.
No more goals at The Hawthorns, but Gundogan has just been taken off injured after falling victim to a heavy tackle from Claudio Yacob. That will be a big concern to Pep Guardiola.
Another mesmerising run from Martial ends with a low shot that is beaten away by Ripley.
The former Monaco starlet looks irresistible on this sort of form.
Palmer's latest free-kick floats harmlessly out of play. There's a bit of a flat atmosphere at Old Trafford with this game having been sewn up for quite some time.
Lindelof and Darmian come tearing forward for United, but the former's backheel is intercepted.
Flanagan makes a strong sliding challenge to stop Lingard from making inroads down that left-hand flank.
Shaw has the ball in the net but the offside flag had long since been raised. It was a good run from the oft-maligned defender, who peeled off the back of Lund to collect Herrera's purposeful pass.
Decision looked marginal, it must be said. What a return that would have been.
A real chance in the early stages of this second half for Burton. Smalling concedes a free-kick that is whipped in by Palmer and headed well wide by a stooping Akpan.
A flurry of substitutions at half-time.
Shaw replaces Mata for United, while Burton send on Warnock and Luke Murphy in place of Turner and Allen.
The second period is off and running. Can Burton at least make this tie sort of interesting, or will United run up a cricket score?
Martial tumbles in the box under pressure from Turner. There looked to be some contact there, but not enough for the referee to point to the spot.
Akpan picks up the first yellow card of the evening for a heavy challenge on Lingard.
Allen shoots over for Burton after the unconvincing Lindelof gives the ball away cheaply deep inside his own half.
Lund also fires high at the back post after being picked out by a decent cross from Palmer.
Carrick sweeps a perfect pass out to Blind, who quickly finds Martial. The French international waltzes through the Burton backline and sets up Lingard for a low shot that takes a massive deflection off Turner and wrong-foots Ripley.
The fat lady is singing at Old Trafford, with just under 10 minutes of the first half remaining.
Dominant United continue to attack in waves. Rashford dispossesses Naylor but his cross is too close to Ripley, who earns his side a bit of much-needed respite.
Having initially seen his cute backheel towards Rashford intercepted, Mata shoots straight at Ripley after Ander Herrera quickly retrieves possession for the hosts.
Still 2-0 to United after 30 minutes.
Sublime play from Mata, who nutmegs Akpan before driving a low left-footed shot off the post.
Darmian keeps the attack alive and Martial's acrobatic attempt from close range is blocked by Flanagan.
Big chances at both ends. Ripley thwarts Martial after the French attacker is sent through one-on-one by Mata and Romero makes a point-blank save to deny Mason following good work from Varney.
Per Opta, that is Rashford's fourth senior brace for United. All of them have come in a different competition.
An errant touch from Rashford allows Turner to make a similar last-ditch tackle after another incisive United break.
Akpan and Flanagan both make powerful defensive headers, but Burton just cannot clear their lines. Blind and Martial combine to tee up Mata, whose shot is straight at Ripley.
Burton are cut to ribbons on the counter-attack but Tom Flanagan makes a crucial sliding challenge to stop Martial in his tracks.
You sense this might be a long evening for the men in yellow.
Rashford finds plenty of space after receiving possession from Blind and proceeds to beat Ripley with an excellent shot from range that crashes in off the inside of the post.
Two goals inside 17 minutes for the 19-year-old.
Veteran winger Lloyd Dyer has caused Darmian all sorts of problems during this opening quarter of an hour.
He wins a free-kick that is floated in to the back post, where Romero flaps rather unconvincingly at the ball after being pushed by Joe Mason.
No free-kick given as Blind hoofs clear.
United almost double their lead as Tom Naylor makes a crucial sliding block to deny Lingard.
At the other end, the fleet-footed Allen gets the better of Mata before shooting over Romero's crossbar.
This has been a good, open game so far.
Spoke too soon.
Varney fails to hold the ball up and Michael Carrick has all the time in the world to pick out Jesse Lingard, whose clever touch through the legs of Turner is picked up by Rashford.
The England forward makes no mistake as he confidently lofts the ball over Connor Ripley.
Disaster for Burton.
A positive start for Burton as stand-in skipper Luke Varney, who previously scored in the League Cup against Manchester United for Crewe, forces a low save from Romero.
Just two minutes gone in the West Midlands and City are already in front. Sane fires home after Ilkay Gundogan's shot is parried by Ben Foster.
Referee Graham Scott, taking charge of Manchester United for the first time tonight, gets us underway.
A reminder that there are no replays in the Carabao Cup, so we could have extra time and penalties. The draw for the fourth round, which you can also follow live on IBTimes UK, will take place after the conclusion of this match.
Burton obviously face an enormous uphill task against the holders this evening, although will be buoyed by the fact that five-time winners United, looking to make the fourth round for the ninth time in 10 seasons, have been knocked out of this competition in two of the last three games played at Old Trafford against lower league opponents.
In October 2015, Louis van Gaal's charges were beaten on penalties by Middlesbrough after a goalless draw.
Burton confirm that they are "rewarding" the players that secured the club's passage into the third round by starting them in tonight's match. Joint-captain Jake Buxton misses out with an unspecified knock.
In tonight's earlier kick-offs, Arsenal host Doncaster Rovers, Nottingham Forest visit Chelsea and Everton welcome Sunderland.
Here is a quick look at last night's results, which included surprise losses for Liverpool and Stoke and a much-needed shot in the arm for Roy Hodgson and Crystal Palace...
Aston Villa 0-2 Middlesbrough
Bournemouth 1-0 Brighton
Brentford 1-3 Norwich
Bristol City 2-0 Stoke
Burnley 2-2 Leeds (Leeds won on penalties)
Crystal Palace 1-0 Huddersfield
Leicester 2-0 Liverpool
West Ham 3-0 Bolton
Wolves 1-0 Bristol Rovers
Reading 0-2 Swansea
Tottenham 1-0 Barnsley
That is eight changes for Premier League leaders City and four for Tony Pulis and West Brom.
The two teams are also scheduled to meet in the top-flight next month.
While Manchester United vs Burton will obviously be the main focus of this live text, I will also endeavour to keep you fully abreast of events in tonight's only other 20.00 BST kick-off between West Brom and Manchester City at The Hawthorns.
Here is how both teams line up:
Clough has also swapped nine, with only Ben Turner and Jamie Allen starting for the second match in succession. Palmer and Akpan get the nod as expected.
Aside from third-string goalkeeper Harry Campbell, all of Burton's substitutes featured from the off against Fulham. First-choice custodian Stephen Bywater is not involved at all.
Nine changes from Mourinho, with only Juan Mata and Golden Boy nominee Marcus Rashford retaining their starting berths. Phil Jones, Ashley Young, Marouane Fellaini and Romelu Lukaku all drop to the bench, while Henrikh Mkhitaryan is also given a rest.
Shaw is only named as a substitute as Matteo Darmian and Daley Blind line up at full-back. Pereira and McTominay both make the matchday squad.
Burton finished just a solitary point above the relegation zone in their maiden Championship season and currently sit 19th having taken eight points from a possible 24 so far this term.
Bouncing back from a heavy 5-0 trouncing by leaders Leeds last month, Clough's men claimed a resolute goalless draw at Norwich before goals from Warnock and Lucas Akins sealed a first ever win over Fulham on Saturday.
They saw off League One Oldham Athletic and Cardiff City to reach the third round of this competition for only the third time in their history. The man who scored the winner in that latter tie, Ben Fox, has travelled with his parent club tonight despite having since been sent out on loan to Solihull Moors.
Right-back John Brayford's second-round appearance for Sheffield United against Walsall means he is cup-tied tonight, although midfielders Hope Akpan and Matty Palmer are both expected to be fit.
Stephen Warnock, Matty Lund and Sean Scannell are all back in action, but record signing Liam Boyce remains out with a ruptured anterior cruciate ligament in his left knee suffered in pre-season. Former Tottenham midfielder Will Miller has a hamstring injury.
"Everyone stepped up their fitness Saturday," Clough said in his pre-match press conference on Monday. "We have a few knocks, despite having United we have QPR, Villa and Wolves coming up which is more important."
Let's bring you up to date with all the latest selection news before we delve further into tonight's contest.
In-form holders United, who have won all but two of their first seven matches across all competitions and currently sit joint-top of the Premier League, will make changes from Sunday's typically ruthless 4-0 defeat of Everton but are still expected to name a strong team.
Regulars such as David De Gea, Antonio Valencia, Eric Bailly and Nemanja Matic are set to be rested, while Paul Pogba (hamstring) and Axel Tuanzebe (back) join long-term absentees Marcos Rojo and Zlatan Ibrahimovic on the sidelines.
The likes of Sergio Romero, Chris Smalling and Victor Lindelof are all slated to start and Luke Shaw could make his first senior appearance since April. Youngsters Scott McTominay, Kieran O'Hara and Joel Pereira should also be involved in some capacity.
"Probably the most important event in the club's progress for the past 20-30 years"
That is how Nigel Clough described Burton Albion's only previous dalliance with the mighty Manchester United, a 5-0 FA Cup third-round defeat back in 2006 played out in front of 11,000 travelling supporters at Old Trafford after the Brewers, then in the conference, had clung on for an unlikely goalless draw on home turf despite the late introductions of Cristiano Ronaldo and Wayne Rooney.
In addition to helping them pay off the Pirelli Stadium, securing a replay, in addition to drawing tears from chairman Ben Robinson, also enabled them to build a solid financial platform for a rapid rise through the leagues that saw them earn three promotions and defy a modest budget to consolidate their status as a Championship team.
"Some of the players were builders, few were doing fitness jobs, Keith was a driving instructor"
Clough, now almost two years into his second stint at the helm following spells with Derby County and Sheffield United, has already confirmed that a second trip to the Theatre of Dreams, which takes place on the 13th anniversary of his father's death, could assist with a January recruitment drive.