Nani is approaching 200 appearances for the Red Devils after joining from Sporting Lisbon five years ago and has become an increasingly important member of the team.
The 25-year-old has been in talks with the Red Devils over an extension, but there have been reports that Nani is worried the club will sell him this summer.
He believes he has the backing of manager Sir Alex Ferguson and is waiting to see how discussions over a new deal pan out.
"We will see," Nani is quoted by the Times of India when asked about his future. "I am very happy at Man United and have been there five years and won every title.
"The manager has great faith in me and that's what is important. My agent is negotiating and we'll see what happens."
Nani is determined to make up for last season's heartache when United were denied the Premier League title in the final minutes of the campaign by local rivals Manchester City.
He added: "That's football - you are always going to suffer disappointments and you just have to deal with them.
"Football is like life and so there will be times when you suffer a big disappointment.
"It hurt to miss the league title in the last minutes, City had incredible luck that day. Hopefully next season is our turn and it's up to us to make that happen."
Manchester City will try and win back the Premier League title with this new soccer jersey from Nike!
Support the USA national team with an official 2013 Centennial soccer jersey from Nike. Its Official.
The hoop soccer jersey is classic and cool. The USA hooped jersey is perfect for every fan. Get in the Gear.
Germany is one of the top teams ever and they will play the US on Sunday.
Neymar's move from Santos to Barcelona is no doubt the biggest summer transfer.
Jamaica is in need of a win against the U.S. Get the jersey of the Reggae Boyz.
The adidas Nitrocharge is the most talked about new cleat in years. It was released on May 15 and will take your pitch by storm.
The USA will wear their blue away jersey against Jamaica in their World Cup qualifier on Friday night.
Barcelona will wear this new home soccer jersey next season. They also have a new away jersey. Get them both.
The Nike Hypervenom is the latest cleat silo from Nike. It will change your game and is worn by the game's top players.