2) Attack wide areas
City were undone by Wolverhampton Wanderers in the Premier League at the Etihad largely due to winger Adama Traore. His pace and quality on the flank caused them all sorts of problems, and that is the perfect blueprint for United.
City's full-back's push very high up the pitch and almost become wingers, which leaves gaping holes in wide areas for United to attack.
If James and Martial can occupy these empty areas, when United win the ball back, it will give them the perfect chance to attack City where it hurts. However, to do this requires a lot of discipline because in a game of this magnitude, it is very easy to get sucked towards the ball, rather than going into areas where there is space.
James has slowed down somewhat since his remarkable start at United and Wednesday could be the ideal match for him to get back to his best for the club.
Crystal Palace did the same at the Etihad, as Wilfried Zaha's quality on the flank resulted in the late equaliser a few weeks ago.