The Portuguese tactician replaced Harry Redknapp at White Hart Lane in the summer after his failed spell at Chelsea and although his game style goes hand-in-hand with the North London club, Fergie knows he has a lot of work to do to produce consistent results.
"He has a challenge," Ferguson told reporters. "He wasn't at Chelsea very long, but he came to our ground early last season and his team tried to play football.
"That's his philosophy and I think he's carrying that out at Tottenham as well. He suits Spurs. They've always had a history of playing good football. I think he'll carry on that way.
"I hope they do well because it's a difficult industry these days, particularly for a young manager.
"It must be very daunting and challenging to go to a big club. It's full of risk because it's a results industry."