I'm not as sure as everyone on this board that Obekpa's hiring an agent is a bad move. This is a very weak draft this year, and you have to admit that Obekpa's shot-blocking ability, his timing and ability to alter shots, would be transferable to the next level.
Yes, he spent only one day at Athlete's Institute, but maybe he was told by someone with connections to hire an agent, that he was in some team's plans.
In terms of his character, work ethic, history of suspensions, and tendency to quit, he wouldn't be the first player with any or all of those traits to be drafted. In a weak draft, teams look for physical attributes and potential.