Manchester United defender Rio Ferdinand loves playing for manager Sir Alex Ferguson.
Ferdinand says Ferguson is the best in the business.
"The fire is still burning," Ferdinand told The Sun. "You see it every day.
"You look at the detail he goes into in terms of pre-match talks, the videos with the staff, the research that they do, and you can't do all that without having the desire and hunger he's got.
"In fact he goes into more detail than he did when I joined nine years ago and has become a bit more meticulous. That's probably because the competition has got stronger over the years.
"He's embraced everything, like the scientific stuff and has brought that into the club. Everyone's had to move with the times and he's done that.
"He's mellowed because you've got different animals now, there's more foreign players.
"But if something needs to be said there's no half measures.
"After what he's achieved he's got to command that respect when he walks into a room with what he's won and the way he carries himself. But he knows you can't be a schoolteacher all day long.
"He has a laugh and a joke with some of the players but when it's business time it's business. He will come in and take the mick out of people and you can do it back - but only slightly.
"There's a definite line between the manager and the players.
"It's not a line in the floor where you can actually see it, but you know in your head where it is."
