Unfortunately, for the most part this season his control has been poor, and he seems to simply be wanting to do a Jack Wilshere of just charging blindly into whichever opponent is in front of him and hoping he will come out the other side.
As
@Kostur said, despite Zouma's attentions all game and Chelsea setting out to nullify him, Fellaini did still manage to create a great chance for Falcao, and the one for Rooney as well. He also made plenty of defensive headers and clearances - people today are undervaluing how important his height was when
defending against a very tall Chelsea side.