The Portuguese has struggled for fitness and form this term, but is eager to make up for that as the Red Devils look to romp home in the Premier League title race
The Portugal international has made just 17 appearances for the club this term having been in and out of Sir Alex Ferguson's first team due to injuries and poor form.
But after the Red Devils saw their double hopes ended by Monday's FA Cup quarter-final defeat to Chelsea, the 26-year-old is hoping for a happier end to the campaign.
"I think everyone has been a bit disappointed and a bit down after that day," he told the club's official website.
"Everyone expected a good result but that's football and we already spoke all together with the manager. We know we still have a job to do and have to focus on the next games and try to forget that.
"This season has been a bit disappointing for me as I've had a couple of injuries. It's been very difficult to be at my best but I've come back from injury and am trying to be at my best until the finish of the season.
"I hope that, next season, I can do what I like to do - play my football and be at my best."
United hold a 15-point lead at the top of the Premier League with just seven games remaining, and Nani has revealed that his side's added determination this season is a result of their last-gasp surrender of the title to Manchester City last time around.
"It means a lot because I've been saying in the past that what you learn at this club is the mentality to always win every competition and the most important is the Premier League," he continued.
"So what happened last year made us very focused on this league for this year. I think we've been doing a very good job to be in this position and we want to win the league and make history for this club again.