I personally wish him well, I think he can work on his new defensive style and work at keeping out of trouble and use his speed to rack up a few TKO's.
Herol Graham did pretty well as a defensive fighter, he got tagged when he forgot about defence and got overly cocky. Khan just needs to keep working away and keep 100% focused. I hope he does silence some critics, yeah he's not yet top drawer but who knows what's around the corner.