James is much more effective on the left, and is the man in form right now. Martial has made a good start as a #9, so does that mean Rashford will start on the right? It would be bad management if Ole shifts James to the right just to put Rashford on the left. The man in form should start in his favoured position. Mourinho made this mistake when Alexis was signed, Martial was in arguably the best form of his United career, yet was shifted out to the right to make way for Alexis.