Willem: Angelino looks out of his depth in this game. He is an attacking full-back, but doesn't have the confidence to go on the attack much.

Dan James has Angelino on toast once again, beating the fullback to fire a low ball into the box that is inches away from being turned in by Anthony Martial.

Joshua: Wow what is happening, United playing like City and City playing like United.

Dan: Are Manchester City just exceptionally vulnerable to pace? They could be 6-0 down already.

Neil: At this rate Pep will be the next PL manager to be sacked.

Image source, Getty Images

Bernardo Silva tries his luck from distance but it is straight down David de Gea's throat.

The Manchester United keeper was never in trouble but it is a shot on target for Manchester City - their first of the game.

Eteyen: United should be three goals up, hope we don't come to rue these missed chances.

Jon: This first 30 mins has been absolutely outstanding from United. Fully deserved. Gobsmacked.

Raheem Sterling tries to make something happen for a stunned Manchester City as he works his way into the box from the left but Aaron Wan-Bissaka puts in a superb challenge to clear.

Chris Bevan
BBC Sport at Etihad Stadium

The City fans are in stunned silence. The United supporters in the corner of the South Stand are still bouncing around, and singing about Ole Gunnar Solskjaer.

Simon Stone
BBC Sport at the Etihad Stadium

I have been lucky enough to see Manchester City many times during the Pep Guardiola era.

I don't think I have ever seen them suffer defensively as much as they are doing tonight.

Quite incredible.

Image source, Getty Images

Michael Brown
Former Manchester City midfielder on BBC 5 Live Sports Extra

It's a brilliant move from Manchester United. They are carving City open at the moment.

Somehow it just beats Ederson, it's a brilliant finish. They have had four or five opportunities. that's the danger for Manchester City. Defensively they don't look like they have an answer.

Marcus Rashford again!

This time the forward is found on the edge of the area by Dan James. Again Rashford tries to place but this time the ball smacks against the crossbar.

The Manchester City defence is getting carved open every time the visitors attack.

Harrison: Absolutely spot on from VAR. Clumsy challenge from Bernardo. Stonewall.

Loz: Do the City players not realise how ridiculous they look arguing against a decision that has been given because others have checked several replays and deemed the ref made a clear and obvious error? So petulant. Just like their manager.

Should be 2-0!

Manchester United counter quickly following a Manchester City corner. It is a lovely, sweeping move as Jesse Lingard threads a delightful ball through to Marcus Rashford. He is in on goal and looks certain to score... wide!

What a thrilling 25 minutes of football this has been.

Michael Brown
Former Manchester City midfielder on BBC 5 Live Sports Extra

We said straight away that it looked like a penalty. It was a brilliant run by Marcus Rashford. It was a clumsy challenge from Bernardo Silva.

Bernardo Silva is booked.

Marcus Rashford steps up for the penalty...

VAR say PENALTY!

This could be a big moment in the title race...

Michael Brown
Former Manchester City midfielder on BBC 5 Live Sports Extra

Manchester City's opportunity came from a brilliant one-two. Pep Guardiola and David Silva were asking for it but it was never going to be a penalty.

Another quick break by Manchester United. Marcus Rashford tries to charge his way through three Manchester City players, Bernardo Silva comes in and Rashford goes down, penalty? Referee says no but VAR is taking a look...

Gabriel Jesus cuts inside Harry Maguire but then smashes a shot into Victor Lindelof.

Almost 20 minutes in and Manchester City are yet to test David de Gea.