Gianluigi Buffon has slammed Sir Alex Ferguson for his treatment of Juventus teammate Paul Pogba.

The great Scottish tactician let the French midfielder leave Manchester United in the summer of 2012 after he failed to force his way into the first team at Old Trafford.

When assessing the decision of Ferguson to allow Pogba to depart, Bianconeri goalkeeper Buffon admitted he was puzzled that the 22-year old was given permission to leave.

"I have been in football many years, but the decision of Sir Alex Ferguson and Manchester United to not play Pogba and let him leave is one of the strangest decisions I have ever seen," Buffon told The Express.

"Just after a few training sessions we saw how good he was, it cannot have been the same player they saw in Manchester - we thought they may be needed glasses.

"I have never seen a player who is so good at his age, he is so strong, so technically gifted, has exceptional all-round play.

"Pogba can do things only Pogba can, similar to Messi and Ronaldo. United let one of the top players in the world leave, but that has only been good news for us."