Sir Alex goes out on a wing for Nani . .

Ferguson freely admits Ronaldo was a "once-in-a-lifetime" player, who will go down in the history books for his phenomenal 42-goal contribution to United's 2008 Champions League-winning season.

However, since his fellow countryman left for Real Madrid 12 months later, Nani has stepped out of the shadows and become United's main man.

He may still frustrate by holding on to the ball too long but he is also capable of bewitching skill that opponents struggle to contain.

The 24-year-old scored his 10th goal of the season in last weekend's Manchester derby win at Old Trafford and Ferguson is expecting much more from the former Sporting Lisbon star.

"Ronaldo was exceptional," reflected Ferguson. "He is a one-in-a-lifetime player.

"But it did take him time to settle and develop in the English game. If anything, Nani has done it a bit quicker.

"I don't need to trumpet his improvement. He has been consistent all season.

"He is a match-winner who creates goals and he scores them. He had seven strikes against City and that is a high ratio for a winger, particularly in a big game.

"He is showing maturity now. Every time he gets near the box you think something is going to happen. When you get that, you have a great player."