As much as I am fed up with Bale, I am ready to part with Ronaldo first.
Iker
Carvajal Pepe Ramos Marcelo
James Kroos Modric Isco
Bale
Benzema
Bale performed well in that center role, he doesn't have to defend as much and anyway, he is stupid tactically anyway so its better to release him from his misery. His speed and counters would be good especially long range shots. On the side, he is confused and better players like Di Maria suffered there. Although the skill set is better suited to have Bale and James switch positions, it is what it is. Bale Benzema and James can all move into a 4 3 3 in attack with Modric and Isco centering in. In defense retreat into a 4 4 2 in defense.