- 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.
Manchester United 4-1 Burton Albion
West Brom 1-2 Manchester City
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.
Goal: Manchester United 4-1 Burton Albion (Lloyd Dyer)
Just the one minute of additional time to be played at Old Trafford.
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?
Goal: West Brom 1-2 Manchester City (Leroy Sane)
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.
It was also Yacob's first goal for almost four years...
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.
Goal: West Brom 1-1 Manchester City (Claudio Yacob)
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.
Goal: Manchester United 4-0 Burton Albion (Anthony Martial)
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.