To me, they are few and far between.
Now. Reason I bring this up is because while we may get a new coach with NBA experience, what if we grabbed someone that was fresh, new, and could develop young players?
I know Pitino didn't have any luck with the Celtics, so we'll stray away from him. I think Jim Calhound or Tubby Smith would be the best choices. Lute Olson will never leave, Knight is a headcase(but would be QUITE entertaining) and would never leave college ball. Coach K did well coaching NBA players but wouldn't leave(and is a duke product - no dukie does well, unless your name is Grant Hill, Elton Brand, or Luol Deng)
I remember reading articles about how he might come here, but those rumors died. I think he would have the best chance of getting promoted here.
In all honesty, I'd rather have Jim Calhoun, and his owning of Duke and prepping for big games