You may have been concerned Arsene, but Arsenal are safely through in the end.
We shall bid you goodnight.
If you're just logging in, the fourth-round draw can be found here.
See you soon!
Arsenal manager Arsene Wenger: "Yes that was hard work, credit to Doncaster, they kept going. We started well in the first 35 minutes but we decreased slowly.
"We lost our collective game and couldn't score the second goal, it became more difficult. We wanted to score goals we were just lacking. It was a typical cup game.
"I was concerned, they looked dangerous."
Jack Wilshere completed 90 minutes in a match for Arsenal for the first time since September 2014, in a League Cup match against Southampton.
A gift-wrapped goal for Michy Batshuayi from Eden Hazard tonight...
Manchester United boss Jose Mourinho: “Anthony Martial wanted to do things – some he did amazingly well, others not so well but he was always trying and that commitment and happiness on the pitch is always important.
“If the competition is an official competition then it is important for Manchester United and for me as a manager.
“If you ask me could the English football survive or even be better without this competition? Maybe, maybe we would be fresher for European competition for example. But we have this competition, we have to respect the sponsors, we have to respect the opponents and a lot of us are trying to do our best.”
The fourth-round ties will take place in the week of 23 October.
Since his debut for the club, Marcus Rashford has been directly involved in 32 goals in all competitions for Manchester United (24 goals, 8 assists).
Only Zlatan Ibrahimovic (28 goals, 9 assists) has been involved in more that time (Martial also 32, 19 goals, 13 assists).
That concludes the draw. Pick of the bunch? Err, Chelsea v Everton...?
Leicester v Leeds
Bournemouth v Middlesbrough
Chelsea v Everton
Manchester City v Wolves
Swansea City v Manchester United
Arsenal v Norwich City
Tottenham Hotspur v West Ham United
Bristol City v Crystal Palace
I'll get any update on Ilkay Gundogan's injury to you as soon as we get it.
It's over! Leroy Sane's double sends City through.
NO EXTRA TIME ANYWHERE.
Hal Robson-Kanu has to score that chance. A sitter!
Still we play on...
Geoff Ramm: Yet again my team Sunderland limp out of a cup competition like a patient on crutches.
BBC Sport at Old Trafford
The last time Jose Mourinho went into his opponents' technical area, he ended up in a bit of an argument with Mark Hughes at Stoke.
Tonight, Mourinho watched the last few seconds in front of the Burton dug-out.
He had just shaked hands and was about to walk off following the visitors' consolation but thought better of it.
Still playing at the Hawthorns - and that should be 2-2! Hal Robson-Kanu hits the outside of the post! A really good chance!
The fourth round draw is coming up...
Manchester United threw on young keeper Joel Pereira a few minutes ago, and he's had a nightmare. A header hits the bar, Pereira juggles the loose ball, collides with his own player and drops it for Lloyd Dyer, who thrashes home.
BBC Radio 5 live
...lines are open now so get calling.
Danny Mills will be with Mark Champman until 22.30 BST tonight.
Call 08085 909 693. Text 85058. Or use @5liveSport
Among the subjects up for discussion tonight - the role of the Carabao Cup in the domestic calendar.
FIVE minutes added on at The Hawthorns...
Time to scrap the League Cup. If Burton are playing reserves there's really no point to it anymore.
Anthony Martial is over a free-kick for United, he curls one - into the side-netting!
Chris Lord: At Emirates, frustrating game, Wilshere doesn't look to shoot! disinterest from Sanchez, first off the pitch, not with others
Alex Barton: Oumar Niasse about to become a cult hero
Burton have been soundly beaten but they keep plugging away, as Lloyd Dyer runs into the area on the left and cracks a rising shot - over the top.
So with eight or so minutes left of the two 20:00 BST matches the only chance of extra time looks like being at the Hawthorns. There have been 20 shots on goal tonight.
Arsenal still leading - into the last minute or so...
Still time for Albion to force another leveller and Salomon Rondon is very close to finding it! He meets a cross from the right with a fine header which fizzes past the post.
Still 10 minutes left at The Hawthorns.
Almost a fifth at Old Trafford as Anthony Martial sprints into the box and fires across goal - just wide!
United have also changed their goalkeeper. Showboating stuff.
What a brilliant player this lad is. West Brom had another chance of their own but City counter at pace, Leroy Sane sprints at full speed down the right, manipulates the ball on to his left foot and places a curler perfectly into the top corner. Brilliant goal.
Right at the end, Tendayi Darikwa pokes home for Forest.
A needed win.
Speaking on Radio 5 live
Oumar Niasse, reintegrated into the Everton squad, will remember his first goal for the club.
It was superbly taken off his chest and clipped home with the outside of his right foot.
It's only his eighth appearance for the club and his first since his loan spell at Hull City last season.
Manchester City are suddenly all over the shop at the back and West Brom should really be ahead! Matty Phillips gets clear on the right and picks out Hal Robson-Kanu, maybe eight yards out, and he sidefoots wide!
City have crumbled after Ilkay Gundogan went off.
BBC Sport at Old Trafford
There was no hat-trick for Marcus Rashford at Old Trafford tonight but he did get a standing ovation after making his way straight down the tunnel after being replaced by Scott McTominay.
Rashford scored 11 goals in the whole of last season. That is five so far this one now - and 24 overall, which is three more than Nemanja Vidic for what it's worth.