Four things Manchester City must do to cause Manchester United upset

4) Hart at his best

This is something rather out of Pellegrini’s control, but Joe Hart will need to have a blinder in this game as he did in the recent 1-0 defeat to Barcelona, which would have been a much more one-sided scoreline if not for his heroics in goal. The England international has shown he is capable of match-winning displays and could prove crucial in keeping the likes of Wayne Rooney quiet this Sunday as the home side are likely to have plenty of the ball and attacking chances.