It's hard to believe that once upon a time, Mullens was considered a top 5 high school player and even considered number 1 by Rivals. His highlight video was filled with acrobatic dunks. How did he become a poor man's Andrea Bargnani?
He is sooo athletic. Size + athleticism + some skill level. With even a modicum of effort, this guy could've been a really good NBA player playing 30+ minutes a night. And he can't even be arsed to do even that. Just a waste of talent and a roster space. No heart, no brains.
Give him a few years in Europe and see if he can turn things around for himself. He has had more than enough chances in the NBA.