Charlton cannot praise Ferguson's methods highly enough.
"He is such a motivator and he's in control totally of his squad," he said. "I'm happy just to say 'on you go, Al, you just do it the way you've always done it'.
"It shows in the performances and the goals that we're scoring. We have lots and lots of goalscorers now and most of them are pretty young, so the future looks pretty good.
"He reads the game and knows the game. He finds that young players are really important in the future of the club.
"Then when you've got someone like Robin van Persie, at 29, he has been a success. Alex wants the younger players who come through to be that successful too.
"How he does it is a question of talent that only Alex can answer. He knows everything about the game."