There are lots of rumours around Madrid. The whole dressing room bust up between Ronaldo and the Spanish players, namely Ramos, who Mourinho wants to sell, but he won't be allowed to as the President loves him. The President has a weekly lunch with Ramos and Cassius. Ronaldo is their big money signing so they need to keep him happy too, so they're a bit split on that. Mourinho wants to sign Tevez, and the board are telling him he already has enough players.
Mourinho isn't getting to call the shots. I wouldn't be at all surprised if he walked out, plus he knows they're not gonna win the league. Might be an easy way out for him.