Dont think that will be defensive, depending on the duties Xavi, Keita will have (Pedro and Alves will obviously be pretty offensive), the former as AM or Keita hyper box to box play (at times gets freedom for it). And its happening due to Iniesta not being ready it seems, and not trusting Bojan enough for a game like this perhaps?
And here is Reals:
Casillas
Ramos - Albiol - Garay - Arbeloa
Gago - Xabi - Marcelo
Van der Vaart
Higuain - Cristiano