Pep Guardiola made the stark admission that he is “not good enough” as Manchester City manager after Manchester United produced a stunning late fightback to seal a 2-1 derby win and inflict an eighth defeat in 11 games on the crisis-hit champions.

City midfielder Phil Foden accused his team of “youth-team defending” after the game, while Bernardo Silva said his side “played like the Under-15 team” at the Etihad.

But with City dropping to fifth place in the Premier League, nine points behind leaders Liverpool who have played a game fewer, Guardiola said that he is now no longer good enough for the club, just a month after signing a two-year contract extension as manager.

“I’m the boss, I’m the manager and I’m not good enough,” Guardiola said. “I have to find a solution, it’s as simple as that. I’m not doing well, that’s the truth.

“It is what it is. What can I say? We cannot blame this player or that one, it’s not that. It’s the season, a tough season.

“We didn’t play our best. We are not our best and we struggle a bit. This is 8 in 11 now, it is not normal, something is not right.

“It’s getting worse and worse. I have to find the solution. So far I didn’t find it.”

City’s run of results is now the club’s worst since 2003, when the team won just once in 18 games.