Cristiano Ronaldo says his future is tied to Manchester United boss Sir Alex Ferguson.

Ronaldo told MUTV: "The boss is always important for me, not just last season but every season. I am at this club because of him. He saw me in a few games before I played against Manchester United - people think I came here just because I played (well) against United but it's not true.

"He's always helped me and I said to him, 'I want to be part of this club with you. I want to win trophies with you.' He's very important in my career, Sir Alex Ferguson."