Joe Kinnear: "He's right up there with the best of them.
"I like to think I played with one of the best strikers in the world in Jimmy Greaves and Michael has similar attributes.
"In the last window there was a chance of him going to Everton but that fell through and now he's going to an even bigger club.
"He's a great pro, he's very dedicated, he's a really nice lad and I'm sure Alex will get the best out of him."