Manchester United boss Sir Alex Ferguson believes Cristiano Ronaldo can win multiple Ballon d'Ors after his success this season.

Ferguson insists there is much more to come from the 23-year-old.

"Of course he can win it again," the United coach said on TF1. "He's only starting his career. We expect, and I think Cristiano also expects, him to improve.

"I think that when a player gets to 26 that's when they begin to mature so these next three or four years for Cristiano will prove my point.

"He'll win more and I hope he'll win them at Manchester United.

"Everyone at the club is delighted to see him get this prize because it represents the best award you can get as a footballer, this individual prize.

"He really deserved it when you look at what he did this year, 42 goals from a wing position is amazing.

"It's a long time, 40 years, since (George) Best got it so I'm delighted that we have another prestigious moment.

"It's also part of the legend of Cristiano Ronaldo."

In a video montage of tributes to Ronaldo, Ferguson also urged his young player to prove that last season was not a one-off.

He said: "Cristiano, we're proud of you, you are a fantastic example to all the young players who arrive from abroad.

"Now continue training yourself to win, set yourself to win and develop your unique talent. Well done. Continue this way."