Beckham plays his last senior game this weekend for PSG.
Fergie said: “When he went to America, I didn’t think there was a person in this place who thought he could really have a career.
“And yet he still went on to play for his country and played for Milan and PSG in European ties.
“He is an amazing person. I think he has picked the right time.
“He is exactly the same as myself — he’s got plenty of things to do with his life. He’s a young man and I’d imagine fashion will be his role.”