Man City boss Mancini admits Villarreal clash now must-win
Mancini said: "We have four games left and to have a chance of progressing we need to beat Villarreal. We need 10 points.
"The group we are in is strong, so maybe we are okay with just one point from two games - but the next two games must bring us six points. That will be difficult.
"What we must do is win our next game and after that everything could change."