When United meet City in Saturday's Manchester derby, there will be story lines galore to follow. But who are the most important players to watch? Michael Cox picked three from each side.
Zlatan Ibrahimovic (Manchester United)
Although the Swede is often criticised for not performing in big Champions League matches, his record in major league games is excellent. He had a fine record in the Milan derby, scored minutes into his El Clasico debut and regularly netted against Marseille when playing for PSG.
Against his old foe Pep Guardiola, Ibrahimovic will be even more fired up than usual.