The odds are stacked against the Premier League leaders but their boss reckons they could still have a big say in this competition - if they can get past this evening.
Asked if the survivors will want City out, Mancini said: "I think so and also Bayern think this.
"If we go through it will be a big problem for the other teams - but it's an 'if'.
"If Naples don't beat Villarreal and we win it will be an important moment for us. But the Champions League is difficult.