Honestly, it seems that like his predecessor, Mourinho has absolutely no idea how to use flair players. Doesn't make him a bad coach as the aforementioned Sir Alex won many titles as well. Also there are exceptions like CR7, who although arguably being a flair player can be extremely direct....but I'm not sure how well a guy like Sanchez is going to fare under Jose.
Martial is already struggling.... I think Sanchez might too. I might be off here but wasn't it Hazard who had the most problems with Mou?