Mancini is keen to beat Napoli as he does not want to be playing in the Europa League after Christmas.
“I come home to win,” said Mancini. “We don’t know any other way.
“We cannot change the way we play just for this one game. Playing for a draw is not in our mentality.
“This is the kind of match players like mine want to play in. It is what we have been building towards.
“Maybe we have come too far too quickly but we don’t want to stop now. The last thing Manchester City want is Thursday nights in the Europa League.
“This is going to be difficult and demanding, so hard, but we are confident. You could say this is our last chance because defeat means the Champions League is probably over.”