I love Adrien. If the Celtics already didn't have two undersized PFs, I think they should take him. He'll get drafted somewhere and be a solid performer.
Because I follow UConn pretty closely, I can dispel a few things in this thread.
First, Adrien was listed as 6'7" in college. He measured 6'6" in socks and 6'7" in shoes at the combine. His height was never a surprise. And as someone mentioned, he has a huge wingspan and is super strong.
Second, I certainly wouldn't call him overweight. Have you seen a picture of him?