I know that Olynyk has his haters on this board, and therefore any stretch 4 white guy will also have haters, but this dude is putting up numbers lately.
In the last five, he is averaging 20 ppg on 65% fg, 68% 3fg, and 85% ft. He is also averaging 7 rebounds a game while playing mostly on the perimeter. For the season he is averaging 17ppg on 51, 47, 83 splits with 7 rebounds a game.
I don't know if I'd have the guts to draft him in the top 5 in this draft, but with his frame, athleticism, and shooting stroke, that guy is going to be good in the NBA for a long time.