For everyone talking about his height, I know the kid and I thought 6'7 was a little low. I think he is a legit 6'8. The only question about him playing on the perimeter is can he guard someone out there? He is definitely skilled enough offensively to play out there. From everything I've heard, they are planning on using him as a stretch 4 with the possibility of moving to the 3 some.
Just to add to the height thing (not that it matters too much at this point), there is a picture of him on twitter with Doug McDermott (measured at 6'7 3/4" with shoes on at NBA combine) and they look about the same height... He's young, so I'm sure he'll grow more too.