Real Madrid star Cristiano Ronaldo has played down injury fears ahead of this weekend's Champions League final after limping out of training today.

The three-time Ballon d'Or winner sparked concerns over his fitness after his involvement in today's open training session ended abruptly.

The Portuguese attacker made his way back to the changing rooms after clashing with goalkeeper Kiko Casilla, but the 31-year-old is confident of being fit for the final against Atletico Madrid in Milan.

"I had a little scare, but in a couple of days I will be fine," The Mirror quotes Ronaldo as saying. "I've had a little problem, but having been the most used player this season that is normal.

"I think it's the season where I've played the most minutes, and taking out this problem from training I am at my best."

Ronaldo has failed to complete his last three training sessions.