You are right in that most of the talent in the NBA left early but those guys are different than what is coming out of BYU. The last 2 players from BYU to have any kind of shot at the NBA has been Jimmer and Collinsworth. Both of them stayed for their senior year. I realize Collinsworth might have been becuase of injury but his senior year helped him a lot to grow his game and make a name for himself. Mika and Bryant left early and didnt even sniff the NBA. If Yoeli leaves right now, he has no shot at the NBA and if that is his goal then I think staying for another year could possibly help him a lot.