5) Aguero not firing
A player who likes scoring against United and who got the winner in this fixture at the Etihad Stadium earlier in the season, Sergio Aguero is horribly off form for City at the moment and that leaves them short of inspiration as they look for a much-needed win here. The Argentine, incredibly, has only four goals in his last fifteen appearances in all competitions – a run stretching back to the 3rd of December. Without him, it’s hard to see where Manuel Pellegrini’s side’s goals are going to come from.