A frustrated Roberto Mancini has admitted his Manchester City side were not good enough after exiting the Capital One Cup in a surprise 4-2 defeat at home to Aston Villa.

City twice threw away a lead given to them by Mario Balotelli and then Aleksandar Kolarov - after Villa old boy Gareth Barry's own goal had got the visitors back in it.

Gabriel Agbonlahor took the tie to extra time and added a second late on after Charles N'Zogbia had put Villa ahead for the first time.

"It was a difficult match because Aston Villa were a good team," said Mancini.

"We didn't play well and we had some unlucky moments but I think they deserved to go through.

"We are so disappointed. We didn't play well and our play is not quick, we want one touch more every time and this is no good.

"It is the fourth competition but it is the only competition we didn't win and for that reason we wanted to stay in this cup because in two years we have won everything and are missing this one."

"I am tired with these managers ... There are some managers it is better to shut up" - Roberto Mancini

Mancini exchanged heated words with Villa counterpart Paul Lambert in the second half complaining to the fourth official about a tackle by Joe Bennett on Barry.

Afterwards the Italian said he felt managers were more antagonistic to him than his counterparts.

"I am tired with these managers," said the City boss, who has had his fair share of touchline confrontations during his time in England.

"I didn't say nothing to him (Lambert). There are some managers it is better to shut up.

"I asked only if there was a yellow card - without moving my hands (Mancini has been guilty in the past of waving imaginary cards) - with the fourth official and he comes over to me.

"I didn't speak with him. I don't know what is his reason. I can understand if I was talking to him but I didn't say nothing.

"Sometimes these managers go to the big stadiums and the other manager says everything and they say nothing.

"When they go to [Old] Trafford, they say nothing. When other managers talk about the referee they always sit on the bench.
"I don't like this type of behaviour."

Lambert brushed aside Mancini's complaints, saying: "If that's what he said then fine.

"I respect him as a manager and an ex-player. It wasn't really a spat. It was nothing."