Real Madrid signing Cristiano Ronaldo has publicly apologised to former Manchester United teammate Wayne Rooney for his infamous wink in the 2006 European Championships.

"Sometimes you do things because emotions are running high but Wayne is my good friend," Ronaldo said.

"I can't regret it because I think the whole experience made me stronger.

"But looking back it was not the right thing to do and not something I would do any more."