Nani's long-term future at Old Trafford has been the subject of speculation in recent months after slipping down the pecking order in Sir Alex Ferguson's plans.
The Portugal international has started just five games so far this season with reports suggesting Juventus are leading the race to sign him in January.
The 25-year-old admits he is unsure of his future prospects, insisting his fate is out of his hands.
"Only God knows what awaits me," Nani told The Sun.
Nani also rejected suggestions that his fitness is the reason for him losing his spot in the starting XI.
"I am in perfect condition - I am physically good and feeling confident. I am the same Nani as always," he added.