Bernardo Silva thumps into top corner from 25 yards & slips in Mahrez for second before Pereira own goal
Rashford finishes breakaway for Man Utd response
Man City and Man Utd won the last four EFL Cups between them
Second leg on 29 January - winners play Villa or Leicester at Wembley
Man Utd 0-3 Man City
Robbie Savage
Ex-Wales midfielder on BBC Radio 5 Live
On answering what Matic will bring to the team
Looking at performances, not much. He's going to try to protect the back four. It's more of a 4-3-3.
Jesse Lingard has gone off, and there were isolated cheers. I wasn't too sure whether they were from City or United fans.
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Before the second leg on the 29th, Man United have to play Liverpool in the Premier League on the 19th.... at Anfield. I wonder what the most goals United have conceded in the same month is?
George
As a Liverpool fan, my mind has been confused. On one hand I want United to do badly but on the other not badly enough for Ole to get the sack since with him in charge they will never win anything. I think that after this performance, sadly he has to go meaning United could eventually (in some years I hope) rise again.
Mike K
Manchester United 0-3 Manchester City
Sir Alex Ferguson is sitting next to Steve McClaren, rolling back the years. Will they get anything to cheer tonight? Kevin de Bruyne finds Raheem Sterling in space on the edge of the area and his shot is charged down.
Image source, BBC SportThis could get messy - head over here to rate the players out of 10.
Manchester United 0-3 Manchester City
Good early ball from Andreas Pereira sends Marcus Rashford away down the left, they work it inside and Brandon Williams ends up having a shot with his right foot that just about reaches the goal. It is a shot on target though and that's progress for the hosts.
Manchester United 0-3 Manchester City
And away we go...
Manchester United 0-3 Manchester City
I have a feeling this sub may not go down that well - Nemanja Matic is on at the break for Jesse Lingard.
Man Utd 0-3 Man City
Chris Bevan
BBC Sport at Old Trafford
A small pocket of United fans in the Stretford End were singing their old favourite 'Always look on the bright side of life' amid the boos as their players walked off a the break.
And I do have one (small) positive for them - so far their team are doing slightly better than Burton Albion did against City in last season's Carabao Cup semi-final.
City were 4-0 up against the League One side at half-time of the first leg, and went on to win the game 9-0. Things are not quite that bad for United, not yet anyway.
Admittedly that game was at Etihad Stadium, though. City only beat Burton 1-0 away.
Man Utd 0-3 Man City
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Manchester United 0-3 Manchester City
There are still 135 minutes left of this semi final so a three-goal comeback is not out of the question - time wise anyway.
On the other hand I wonder what the biggest ever aggregate defeat is in a semi final?
Man Utd 0-3 Man City
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Shane O'Neil: The only players on the pitch tonight I’d be happy to see remain would be Williams, Wan-Bissaka, Rashford, and Greenwood. I wouldn’t miss any of the rest, nor the manager.
splashyellow: How many of these United fans slating Ole were doing exactly the opposite after the 2-1 win at the Etihad. Fickle.
Kris Jefferson: This Man Utd team is the epitome of mediocre. Some class individuals who can’t work as team with some who really aren’t good enough. Time for an overhaul I think, get someone like Rodgers in (if he’d even come) to start a Kloppesque project over a few years
Man Utd 0-3 Man City
Simon Stone
BBC Sport at Old Trafford
There were boos from Manchester United supporters as the half-time whistle blow just then and more as the players headed into the tunnel.
This is a chastening evening for the hosts.
Image source, Getty ImagesMan Utd 0-3 Man City
Robbie Savage
Ex-Wales midfielder on BBC Radio 5 Live
A Guardiola masterclass. It's been magnificent from City.
United have been poor but let's give all the credit to how good City have been.
Manchester United 0-3 Manchester City
A few boos from the stands as the staff trudge down the sidelines...
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Ferass: Even if City score 7 #Ole, external will come out and say it’s a process and we are rebuilding and he will most likely be smiling. NO UNITED FAN IS SMILING. Ole is clueless and has no tactical awareness.
Ben Peterson: Just when you think this team can’t get worse, they put up this utterly pathetic, shambolic, horrendous, miserable display. New low after new low at Man Utd
Manchester United 0-3 Manchester City
Only one minute added on, a mercy signal from the fourth official.
Man Utd 0-3 Man City
Robbie Savage
Ex-Wales midfielder on BBC Radio 5 Live
This is the worst United half of the season.
Man Utd 0-3 Man City
Simon Stone
BBC Sport at Old Trafford
Remember the 6-1?
Manchester City were one-up at half-time.
Just saying.
Manchester United 0-3 Manchester City
'We want you to stay, we want you to staayyyy,' the City fans serenade Ole Gunnar Solskjaer as Kevin de Bruyne whips in a dream cross and Raheem Sterling slides it wide.
Sterling then has an airshot at the ball. Could be four or five already...