Manchester United boss Sir Alex Ferguson has no fear fielding Rafael against Real Madrid star Cristiano Ronaldo.

The planning for the Champions League blockbuster is already underway.

Fergie said: "I have watched him every day in training and I know ­everything he can do.

"Rafa has had a fantastic ­season. He is quick, aggressive and my favoured option could be him to do a job.

"But there's no point ­worrying about Ronaldo and forgetting about your own game."