Zinedine Zidane believes that Sir Alex Ferguson's decision to let Paul Pogba leave for Juventus was one of his biggest mistakes.
The French youngster left Old Trafford in 2012 after a falling out with Ferguson, due largely to his request for more playing time and a £20,000-a-week contract.
The Bleus international has since impressed with the Old Lady, becoming an integral part of the Bianconeri’s XI under Antonio Conte.
"The word 'mistake' is not something you would normally associate with Alex Ferguson's time at Manchester United," Zidane told the Sunday Mirror.
"But I do think it was a mistake letting Paul Pogba leave.
"He will go on to be one of the best central midfield players in Europe and he was the natural successor to Paul Scholes, someone they could have built the team around."
Zidane, who now works as sporting director at Real Madrid, also hinted the Spanish giants are keeping tabs on the French international.
"He is with Juventus and doing very well but, as always, Real Madrid will be looking to add the best players in the world.”