Real Madrid's fit-again star Cristiano Ronaldo says he is "crazy" to play against Barcelona this weekend.

Ronaldo is expected to be given some minutes against Champions League opponents FC Zurich and hopes to show coach Manuel Pellegrini that he is strong enough to start the big game at the Nou Camp.

"I've been six weeks without a game and I'm crazy to play," he said. "Yes, I can handle the pain and yes, I want to play against Barca.

"I feel very strong and ready."