Roy Keane was left dumbfounded by Manchester United’s first-half performance against Man City, before insisting that the occasion was ‘too big’ for the visitors after Erik ten Hag’s men concede four times in a disastrous opening 45 minutes.

Phil Foden opened the scoring early on for Pep Guardiola’s side before a quick-fire brace from Erling Haaland put City into cruise control.

Foden then got his second thanks to Haaland to cap off a brilliant first half for City, resulting in hoards of United supporters to head for the exit.

And Keane said he ‘couldn’t believe’ what he was seeing at the Etihad.

‘I’m shocked with how poor United have been, City have been excellent,’ Keane said at half-time. ‘You give Man City this time and space with their quality, it’s far too easy. No aggression, try and force them back. Worst start ever for United.’

Keane slated United’s performance and said Ten Hag’s men were looking disjointed all over the pitch.

‘Maybe a lack of belief,’ Keane said when asked about United’s poor performance. ‘It’s been easy for City. As poor as United have been defensively, their passing’s been sloppy, there are gaps between McTominay and Eriksen. Huge job for the manager at half-time. I cant believe how bad Manchester United have been.

‘United are all over the place but it’s brilliant for City. Manchester United, oh my God, it’s like the game is too big for them. The occasion has got to the United players. I almost can’t believe what I’m watching.’