Luiz Felipe Scolari says Raul could be the biggest problem at Real Madrid next season.
The former Brazil and Portugal coach believes Kaka and Cristiano Ronaldo will get along together at Madrid - and the real problem will come from Raul and his influence inside the dressing room.
The ex-Chelsea manager declared: "The problem at Madrid will be Raul.
"Kaka and Ronaldo will become great friends, I have no doubt. But the problem is Madrid's Raul. He is already a veteran and is still the owner of the locker room. There is trouble for anyone he doesn’t like, including the coaches!"
Scolari added: "I'm confident that Kaka and Cristiano Ronaldo are going to get along well. Cristiano is nothing like the image you have of him. I bet that both will become great friends."