Portuguese international Nani, whose contract expires at the end of next season, has been the subject of intense media speculation in recent months with many publications claiming the winger has fallen out of favour at Old Trafford, linking him with moves to various clubs in Europe.
However, when speaking during his weekly press conference at Carrington, the boss was quick to quash such rumours and claimed the 26-year-old is very much part of his plans for the future.
“We want to keep him, there's no doubt about that,” Sir Alex stated.
“He's capable of scoring incredible goals. His goal against Everton, when he dinked the keeper after playing a couple of one-twos, was incredible. And the goal against Tottenham the year before, where he dinked the goalkeeper after playing a one-two, was another one.
"The boy has an incredible talent for winning matches. He's one of the best match-winners in the game, and I include the whole of Europe in that.
“David Gill's been speaking to his agent for quite a few weeks. It's entirely up to the boy - he has a year and a half left. I think he wants guaranteed first-team football. He can guarantee himself that. Performances like the other night can guarantee that.
"We're trying our best to keep him because he's such a match-winner."
Nani has missed much of this season as a result of a hamstring injury and has only just returned to full fitness, most recently coming off the