Former Manchester City defender Richard Dunne believes they can't handle the pressure of European football.
Dunne says City have a mental block when it comes to the Champions League.
He told the Independent: "Their defeat to Tottenham, and the manner of that loss, shows that Pep Guardiola has a problem in terms of the big stage in Europe. "It's eight years now since he won the Champions League as a manager and that will hurt him, the thoughts of another year waiting to see the Champions League back in his hands again.
"Since the new owners came in to take over at City, the target from day one has been to win the Champions League, to be the best club in Europe.
"Maybe it's a mental block that's there and Guardiola needs to overcome that, to beat the top teams in a two-legged situation, to handle those occasions."