Pickens is talented, but a bit of a head case. Throws tantrums when he's not getting the ball. Starts fights on the field with corners that know they can get in their head (we saw Jourdan Lewis get to him last season). When he's not involved in the play he will jog half-speed down the field. And most of the time he doesn't even bother to block.
But if coaches and teammates can get through to him, wow. You are talking a 6'4 receiver with deep speed that can make highlight reel catches look routine. So much ability wrapped in such an immature package.