Charlton said: “Paul Scholes is without any shadow of doubt one of the finest midfield players Manchester United has ever produced.
“I can’t believe he is already about to make his 500th appearance. To me he is still the young lad I saw 12 years ago — he is naturally gifted with great vision.
“This is a great milestone for Paul and, fortunately for us, we have him for a while yet.
“We were all worried when he had an eye problem last season but it was wonderful to have him back after a long lay-off.
“His return to the team was like signing a new player.
“I can’t speak highly enough of Paul Scholes, a sensational player for United and England, and one of the nicest people you are ever likely to meet.”