I have a hard time believing that Pelle is a one and done player. He was rated as highly by scout and espn as he was by rivals, I think he was down around 70 or 80 on those services. He seems extremely raw and the evaluations are that he is atheletic and can block shots but is not a great rebounder, scorer, and lacks intensity.
With some work he could be great, but I just don't think he is one and done, unless he just doesn't want to be in college which might be the case if he struggles academically