Well for me it would be:
------------------Iker----------------------
Arbeloa - Ramos - J. Martinez - Monreal
-----------------X.Alonso------------------
--------Cazorla-----------Iniesta----------
Pedro-----------Torres------------Muniain.
Of course some would prefer Silva, Mata, Llorente etc in there instead but that would be mine.
edit
Monreal is Spains 2nd leftback after Alba, he is actually pretty good, plays for Malaga.
No Villa?
He's ten times better than Torres.