Wayne Rooney will only be revered as a legend when he retires, according to United great, Gary Neville.Manchester United legend Gary Neville has told Wayne Rooney that his greatness will come to the fore once he hangs up his boots. Rooney has come under increasing scrutiny and criticism this season as his performance levels drop, and there are reports he will leave Manchester United at the end of the season, with a move to China his most likely destination.The 31-year old has now become the Red Devil’s top scorer of all time, but he has struggles to get regular playing time, but Neville is of the opinion that the striker will be talked about and revered as a great once he retires.Read also: Rooney loses captaincy, see the man to replace him"He is going through a period of his career where obviously the performances and appearances aren't the same as they were," Neville told Omnisport . "People tend to forget what happened previously."All he needs to do is retire and all of a sudden everybody would remember the greatness of him. We are seeing it with [Arsene] Wenger, Rooney, Steven Gerrard, you see this approach towards them and then they retire and people respect and enjoy what they've seen for the last 15 years."He will get the credit he deserves eventually because he's had a magnificent career. He deserves a tremendous amount of credit for what he's achieved in terms of club and country appearances, goals, commitment and leadership. He is just going through a natural period that most players do."