Weir was at Everton when Rooney first broke onto the scene.
He said: "I remember one of the youth coaches got a row from Colin Harvey when he said he was heading off to coach Wayne.
"Colin just told him 'you can't coach Wayne'.
"He said what Wayne does is natural, what he has is in-bred and it's just a matter of Wayne bringing it out. He is what he is. He is raw, aggressive, plays with his heart on his sleeve and doesn't leave anything at the side of the pitch.
"When I think about it, it's astonishing to see how well things have turned out.
"Wayne is maturing and is at his peak now.
"It's nice for me to see the full spectrum of him as a kid to being at his best - although I am sure he still has a lot to come.
"As a boy Wayne was quiet, well-mannered and a normal, nice lad. Football-wise, he was a bit special, but he had no airs or graces."