N'Golo Kante shoots well over from long range for Chelsea. Now Raheem Sterling does something similar.

Fabinho shoots off target now for Liverpool. The Reds are seeing most of the ball.

Manuel Akanji's decent run into the box is halted by Thomas Partey, who gets his body between man and ball and draws a foul. Good defensive work from the midfielder.

The Gunners need to find a way to reverse the momentum, though. It's one-way traffic.

N'Golo Kante pulls the ball back for Enzo Fernandez, whose shot from the corner of the box is tipped over by David Raya. At least Chelsea are creating something now.

While the Brighton goal was not well-received, of course, it hasn't knocked the stuffing out of the Forest players - or fans.

Forest striker Taiwo Awoniyi has a sighter but his shot lacks power, before team-mate Danilo slashes an angle effort high and wide.

Impassioned roars of encouragement follow every Forest pass, tackle and move.

Three minutes of stoppage time...

The Gunners are being made to look very ordinary at the moment. City's high press forces Aaron Ramsdale to play short to a boxed-in Gabriel, who then slaps the ball straight out of play. Rattled.

After that initial blitz, Arsenal are finally getting a bit of a feel for the ball. They still look a bit dazed, though.

Dion Dublin
Former England striker on BBC Radio 5 Live

Jack Grealish is absolutely flying down the left hand side.

Haaland and De Bruyne are no more than 10 yards away from each other all the time and they just play as a pair. It is brilliant to watch.

Pep Guardiola is furious. He is flapping and throwing his limbs around like one of those inflatable blokes at a car showroom.

The reason? Because Bernardo Silva is penalised for the slightest touch on Granit Xhaka in midfield.

Image source, Reuters

Half-chance for Brentford as Ben Mee heads wide under pressure from Trevoh Chalobah.

Simon Stone
BBC Sport at the City Ground

In the position they are in, Nottingham Forest can do without gifting the opposition goals but that is exactly what one of their most experienced players did then.

Solly March's shot wasn't that powerful.

Kaylor Navas' error meant Facundo Buonanotte could not miss.

Forest are yet to win a Premier League game in which they have conceded a goal this season.

Liverpool should be ahead as Diogo Jota volleys over from eight yards out after a bit of pinball.

It's all City.

Jack Grealish beats a couple of men on the left way too easily to set them charging forward. He finds Kevin de Bruyne who then tries to thread in Erling Haaland, only for an Arsenal touch to halt the move.

Phil McNulty
BBC Sport chief football writer at Etihad Stadium

Well that had been coming even after only a few minutes, Touch of class from Kevin De Bruyne.

Manchester City had made their intentions clear in the early stages by flying out at Arsenal and there are a lot of nerves in that Gunners rearguard.

Deafening atmosphere inside Etihad Stadium just got a whole lot louder.

It is exactly the start Mikel Arteta will have wanted to avoid. He knows only too well how City can tear you to shreds if they get the bit between their teeth and noses ahead.

Trent Alexander-Arnold has provided five assists in his last four appearances in the Premier League, one more than his previous 40 games.