City ran out 4-1 winners over their bitter rivals on Sunday afternoon to restore their six point lead at the top of the Premier League.
It was a dominant second half performance from Pep Guardiola's side and Richards, a former City player, was loving every second of it.
The 33-year-old was out of his chair chanting 'City, City,' as a furious Keane watched on.
Keane and Richards are one of the best acts in punditry but you get the feeling Keane wasn't in the mood for jokes yesterday.
City took the lead inside five minutes through Kevin De Bruyne before United, who were without a recognised striker due to Cristiano Ronaldo's absence, levelled through Jadon Sancho.
De Bruyne put the home side ahead once again just before the half hour mark and it was fairly routine from there.
Riyad Mahrez scored a third from a lovely corner routine and it pretty much decided the game.
The final 15 minutes of the game saw City have 92 per cent of the ball compared to United's eight per cent.
Mahrez doubled his tally in added time after a poor David de Gea clearance.
Micah Richards trying his best to hold in his laughter when Roy Keane vents about Manchester United 🤣 pic.twitter.com/8kyKJvueSF— Football Daily (@footballdaily) March 6, 2022
It sparked a furious response from former Red Devils captain Keane at full-time, who delivered a trademark rant.
Keane accused the players of giving up on game and even said some of them should never play for the club again.
He vented: "Man United gave up and in a derby, in any game, it’s unforgivable - I can forgive mistakes, but not running back, not trying to tackle - there are players out there who shouldn't play for Manchester United again.
"There is no hiding place in top-level sport. We've all lost football matches but it's the way they've lost it.
"You expect them surely to play with a bit of pride but that's a reflection of where the team is at the moment."
Gary Neville echoed Keane's sentiment on commentary and called United's finish to the game a 'disgrace.'
United have slipped to fifth in the league following Arsenal's 3-2 win over Watford earlier on Sunday, and return to action next Saturday against Tottenham Hotspur.
Featured Image Credit: Micah Richards/Instagram
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