Ya true.
He'll probably ask Rooney to play deeper, in the hole behind the striker today, or he might play with 3 central mids, only one real winger, and ask Rooney to start on the left.
If he goes with the former option it might hurt Real tbh, they don't deal with those kind of players very well when they play the Alonso - Khedira duo in midfield. Kroos ran them ragged last season, and took advantage of the space afforded to him. It will be very interesting to see if Mourinho will opt to pack the midfield and play with 3 CM's to avoid what happened last season, or if he'll play his customary 4-2-3-1.