Ferguson has weight concerns for the maturing Rooney.
He said: "Wayne is no Ryan Giggs. Ryan has never put a pound on in his whole life. Wayne is a boy that needs games, you can see that from the frame he's got. He is stocky, strong and really needs games, simple as that.
"Some people are lucky. I have had nights out with the jockey Mick Kinane, we've had three bottles of wine and he's still the same weight, not an ounce on him. Unbelievable, and his father Tommy is exactly the same."