Nah, I'm sure they'll be fine, at least on the football pitch. The relationship will grow cold, but not on the pitch, where all will be forgotten. Casillas especially is a gentleman, so he will have no problem to reconnect with Barca players.

But perhaps the most surprising addition to this bunch of butcher-on-the-pitch players is Arbeloa, at least IMO. I think he was among the most cynical and nasty RM player, even surpassing Ramos and Pepe. I guess that's why Mourinho mentioned his name when asked who was the most important team member. He will do exactly what his coach instruct him. I can't get the image outta my head when he sliding kicked Adriano's balls