you need a first class keeper who could keep you in the game when needed and is incredibley consistant like Manuel Neuer.
You need a defensive, yet quick fullback to cope with their attacking fullbacks and insisive counter attacks like Sagna
You would need quick thinking centre backs with top composure and passing ability, so Kompany and Thiago Silva would be perfect.
David Silva would come inside all game to get involved and dictate play leaving the left side for coentrao to provide width.
In midfield there are two powerhouses with ons of energy capable of bits of magic at any point, Schweinstieger and Yaya Toure, with Alonso keeping the shape of the team and spraying passes to stretch Barca.
Ronaldo is there, A. Because he is the best player that doesn't play for Barcelona and B. his pace will cause Abidal problems all game long. Van persie upfront because he can cause problems for anyone because of his strength, skill and his finishing, because you might have to convert your only 1/2 chances to win.
