Kevin Jones and Herb Pope are probably up there. Lamb was the preseason favorite and he's been good as well. People are in love with DRUMMOND so he could be a candidate as well.
But if we are in late February and there is no obvious winner, and we are running away with the Big East they might give it to the best player on the best team, which would be Dion. If he got the PT and shots that any of those other guys got, he'd be leading the conference in scoring easily.