Defensively, he's a negative. He'll get owned by any decent SF or PF. If you move him around and your opponent guess's wrong, you might be able to get away with starting him but it's a 50-50 gamble every game.
I would be most comfortable playing him at the 4 off the bench. That should limit his holes (REB,DEF) somewhat. I think he probably will be an efficient 3 point shooter as well from the 4.