You do realize that in this formation Modric's role will have even less defense. That is the whole point in having 2 defensive midfielders. I expect to see him come off the bench in to one of the wider areas to use his ability to help Madrid's attack.
Which formation? 4-2-3-1 ?
I'm saying that in Madrid's formation he would have a lot of defending to do if he plays alongside Xabi Alonso. Because C.Ronaldo is pushed up very high, almost like a striker, and Ozil does not help in defending at all.
He will have a lot of covering to do for CR7. Khedira, Granero and Lass do this very well, but i doubt Modric can do it.
And I highly doubt Mourinho would play Modric as a winger, because he is clearly much better in the center, and Mou knows this.