The Red Devils meet rivals Manchester City next Monday in a game that has been billed as the title decider, but Nani is adamant Sir Alex Ferguson’s side must play the game as if it is any other and not get overawed by the occasion.
He told MUTV: "It's a huge game [at City] - there will be a fantastic atmosphere there.
"It will be a difficult game, but if you want to win the league you cannot think about the atmosphere or the opponents, we must just think about the way we play and try to win the game."
|5/1||Nani is 5/1 to score anytime against Manchester City on Monday with William Hill|
"Of course [we can still win the league]. We have to keep believing in our qualities because we still have a great oppportunity to win the title."
The Portuguese winger feels United’s focus in the last few minutes was to blame for their lapses against Everton, and he revealed all the players were frustrated but admitted they have to move on.
"The concentration was not the best in the last few minutes - that's why they were able to create chances and score goals," he said.
"We had a lot of possession and played some fantastic football in attack. But we conceded too many goals and we're not happy about that.
"There is anger from the players, of course, because we wanted to win. We're disappointed to lose four goals. But that's football. It can happen sometimes."