Olympics sprint champ Usain Bolt has branded Manchester United star Cristiano Ronaldo a "wuss".

The double Olympic sprint champion is due to give United a training session on 16 May before their penultimate game of the season against Arsenal.

"The first thing I'm going to tell him: stop acting like a wuss," he said. "Seriously, because the fact why his game is kind of down right now is because these guys are picking on him because he's so soft. No one in football will try it with Rooney. Ronaldo's got to be a little like Rooney, he's got to be aggressive, then these guys will stop picking on him. If Ronaldo's aggressive back to these guys, and gets a few red cards, people will stop picking on him."