Last two years in the upper minors he's been a K-per-game player that's hit .230 and .267. His power in the minors hasn't been overly impressive, and on top of that, he smokes drugs!.
Basically, I don't think he has enough power to cover for what I see as a very weak hit tool for a 1B prospect. I don't see him as a big leaguer, but even if he squeaks by I think he's a 20-25 HR version of Adam Dunn with a bit less walks, which would be, more or less, a replacement level player who only really gets consistent playing time based on "production".