Jose Mourinho is a “great manager” and capable of delivering success at Manchester United, says Nani, but the Red Devils are markedly “different” from the attacking team which thrived under Sir Alex Ferguson.
A rebuilding project at Old Trafford is still in progress at Old Trafford following the departure of an iconic manager back in 2013.
David Moyes and Louis van Gaal failed to convince during forgettable spells at the helm, with the baton passed to Mourinho in the summer of 2016.
He delivered three trophies in his debut campaign, but has found the going a little tougher since then and has been forced to fend off reports of rifts within his camp this term amid inconsistent performances on the field.
Former United star Nani believes positivity will be returned in time, with the Red Devils needing to take lessons from the past as they build towards the future.
“It's different times, a different coach and a different culture I think. Different players, a different mentality, and you can see the attitude is not the same.
“Before [when I was at the club], sometimes we didn't play good football but at the end, we showed that we could do things that other teams couldn't. The last 15 minutes [of games] was just Man United. It was attack, attack, attack. I remember the fans singing that!
“But they still have great players, they still have time to work on it. They have a great manager, so I hope in the future they will get back to their best.”
Nani, who left Old Trafford in 2015, has seen his career return him to his roots at Sporting.
His most recent outing for them saw him skipper the side in a Europa League clash with Arsenal, with that contest seeing his former United team-mate Danny Welbeck suffer a serious ankle injury.
“It was a very sad moment," Nani said of an unfortunate injury sustained by a man he knows well.
“I feel very sorry for him. He is a great person, a great lad and a good friend. When that kind of moment happens in the game you feel very sad.
“I don't know what to say. I just want him to recover well and I hope it is nothing serious but you can see something happened there, so I wish him all the best and a very fast recovery.”