City were defeated 1-0 in their first European final in Porto as their imperious season ended with a whimper.
Kai Havertz’s 42nd minute strike was enough to seal Chelsea’s second Champions League triumph in the all-English final in the Estadio do Dragao.
Thomas Tuchel delivered a tactical masterclass as the German boss completed an incredible resurrection after the Blues’ mid-season slump, but questions have been asked of City boss Guardiola.
Guardiola, who has been lauded for evolving City’s style this season, was accused of overcomplicating his selection on the big stage by pundits and supporters alike.
Former Tottenham midfielder O’Hara did not hold back in his criticism, labelling the Spaniard’s setup a disgrace.
“I couldn’t believe what I was watching,” he told TalkSPORT.
“It’s one of the worst performances I’ve seen from Manchester City in a long time. Bottle jobs. And an absolute disaster of a team selection from Pep Guardiola.
“I cannot believe he got it so wrong in such a big moment.
“Chelsea were brilliant, they were solid, they were organised. They were all over Man City in the first-half. They had their number.
“Guardiola got it so wrong with the team selection with no holding midfielder. If Timo Werner could shoot, it would have been 3-0 at half-time. They were all over them.
“Man City didn’t really create one clear-cut chance apart from the one where Foden was in and [Antonio] Rudiger made a brilliant tackle.
“Reece James had Sterling in his pocket. I cannot believe Sterling even started the game with the form he’s been in.
“I couldn’t believe what I was watching. It was a disgrace from Pep Guardiola.”
Guardiola’s main mistake that has been highlighted was his refusal to start either of his two main defensive midfielders in Fernandinho and Rodri.
That allowed man-of-the-match N’Golo Kante to dictate the play as City’s unconventional starting lineup failed to gain control.
O’Hara believes that Guardiola should have apologised to his players post-match for costing them the final.
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“Pep Guardiola’s arrogance at half-time to not hold his hands up and say, ‘I’ve got this wrong, we’re still in the game, I need to bring Fernandinho on now and get it sorted’.
“He waited until the 64th minute to change it and then they were in control, but you can’t break down this Chelsea team in half an hour. You need a longer period of time. It was too little, too late.
“Pep Guardiola should go in that dressing room and apologise to every single player because he’s the one that’s cost them the Champions League.”
Guardiola defended his controversial team selection post match, and vowed that City will work to return to another elite European final.
“I did what I thought was the best decision.” he said.
“I did my best in the selection. I made the best selection to win the game, the players know it.
“I would like to say it was an exceptional, exceptional season for us.
“It is a big dream being here, but unfortunately we couldn’t win. We tried, we could not do it, and we will work to come back one day.”