2 possibilities spring to mind:
1) he's dumb as a box of knives
2) he's crazy like a fox and knows he just punched his ticket outta here.
You decide.
something about the nonchalant manner in which he plays that has always bothered me...not that he's lazy or sloppy precisely, just a bit too casual. I'm certain if he was more focused/motivated that he could squeeze more production from his game because I think he's very talented. That's along winded way of saying I think he's an underachiever.