And I don't think you understand what "natural limits in ability" are.
The pay range per the Google for a D-league player is $20,000 - $25,000. Let's say that he's making the bare minimum of $20k, which is unlikely given that he's a starter. So, he'd be missing out on $5k/season.
His stats and measurables that are looked at in the combine when he left ISU were not comparable to the current ISU players playing in Europe. I'd gather they are still not, or else he would be playing there. He continued to practice under Hoiberg, and train. He even played the rest of the season when he was charged. He has since been trained and playing with other "professionals." Yet, again, he is not playing in Europe. By contrast, check out Diante Garrett's stats - he is playing in Europe, and wasn't drafted - you'll perhaps find them a little more compelling than the 3 ppg that Bubu was making:
https://en.wikipedia.org/wiki/Diant...ia.org/wiki/Diante_Garrett#College_statistics
I get that you really want this to be a guy who was going to go on and be an all-star. I get that you think this nefarious woman just hosed him out of a career full of chicks and dollar bills and champagne rooms. If that were the case, he's been in the D-league long enough on a team that's good enough with training that's going to be superior to ISU, he's had exposure, and still magically nobody is knocking at his door.