Roberto Mancini was full of praise for his Manchester City players after their victory against Wolves on Saturday.
The Citizens had to wait until the second period to break the deadlock against Mick McCarthy's side, with Edin Dzeko and Aleksandar Kolarov putting the hosts clear of their opponents.
Vincent Kompany's red card, with Stephen Hunt scoring the resulting penalty, threatened to derail City, but Adam Johnson made it 3-1 to the ten-men in injury-time.
“It is impossible to score four or five goals every game. We cannot do that every week," said Mancini post-match.
“After the Man United win I don’t want us to think that games will be easy because that kind of game doesn’t exist especially in the Barclays Premier League.
“In every moment a game can change, we saw that in the second half against Wolves, there has to be total concentration.”
Wolves keeper Wayne Hennessey proved to be the pivotal figure, enjoying a magnificent first-half before errors led to the opening two goals for City.
Mancini knows that persistence was the key for his side though, and even after their captain was dismissed, anything other than victory seemed unlikely.
“It was a win we deserved, we played well. In the first half their goalkeeper was outstanding and saved everything," Mancini added.
“Then we had to play with ten men after Vincent got sent off but we showed good character and determination.”