I did not intend to imply that Chastain would be an immediate replacement for Nunn. Only that he would take Nunn's available scholarship. If Nunn is guilty of his offense, knowing his track record, Groce has to cut him loose. Our fanbase will not allow him to keep Nunn if he is guilty.
AJ and DJW and Kipper can play next season and absorb Nunn's loss for next season. Chastain would be all about taking a good player and balancing classes somewhat (and I qualified taking Chastain only if he plays with the guys currently on the team and he proves that he can hang with them. If he does, he would be worth an offer if Nunn is out.
If Utah wants the guy and my name is John Groce and I am the head coach of the University of Illinois, I am checking out Chastain and seeing if he is legit. Why? Coach K of Utah is a really good coach, played in the NBA and has this resume:
https://en.wikipedia.org/wiki/Larry_Krystkowiak