Nani says the current Manchester United team need an attitude transplant.

United's current predicament greatly saddens Nani, who believes manager Ole Gunnar Solskjaer needs to change his troops' mentality as well as bring in players capable of improving his squad.

"United need more world-class players. Change something, attitude on the pitch," the Portuguese told Omnisport.

"I remember from my time with [former manager] Alex Ferguson, a lot of games we weren't playing our best, we weren't playing beautiful football but in 15 minutes we played with our hearts and to score goals.

"We run, fight for each ball. That's the way we get all the results. They must have more desire to win every battle on the pitch, every ball, every challenge because just like that they're going to improve.

"It's hard to do well when the past is still there. All the big names and important people who made the club achieve so many trophies, they left.

"Now, most of them are still around but not doing what they were doing in the past like coaching or playing.

“Now, they need to build a new strong team, a new strong mentality. This takes time. This has been the problem at Manchester United at the moment."