I have heard several people say top ten, a few say top 5, I personally think he would go 3rd, but I really don't know. He is the best player in Europe by far, great scorer, great passer, great court vision, very athletic and more. His drawbacks are that he is only decent on defense, is 23 years old, and some say his handles are limited, though I don't really see that.
Last year he went 24th, partially because of his contract status, and back then people were saying that if he was able to be drafted directly in to the NBA than he would have gone in the mid to late teens. And this year he improved tremendously, winning MVP of all the tournaments he was in so far, and likely to win MVP of his league.
ULEB 07/08 - 22.6mpg, 15.2ppg, FG% 46.8, 3pt% 39.1, FT% 94.1, Reb 3.4, ast 3.7, stl 2.0
ACB O7/08 - 28mpg, 21.6ppg, FG% 49.7, 3pt% 42.2, FT% 91.1, Reb 3.1, ast 4.2, stl 2.2
Also, remember that assists are recorded differently in Europe and those numbers would basically be much higher in the states.
Here is compilation
Highlights from a recent game