Cal had guys like Lee enter the draft last year just to gauge where they'd stand from an NBA- standpoint. It actually helped many of them in terms of feedback and areas of improvement. I bet Diallo is overwhelmingly favoring a return to UK right now. It certainly doesn't hurt to enter the draft, although I know as fans we'd all like our peace of mind.
This is likely the same thing. If, however Diallo stays in after hearing negative advice from scouts, wake me up next March when it's time for the tournament. I'll probably try skipping the "growing process" for once. That's not a slight against Cal or the system as much as it is a slight against what will likely be my lack of enthusiasm about a Diallo-less UK team. All we've heard since January was how Cal told him, "Don't come here if you won't be here in '17-18." If UK becomes a haven for guys who want to practice against other NBA-level guys for a semester, only to bolt before actually playing here, yes, my enthusiasm will likely decrease somewhat. I'll still support Cal and his system; I'll just consider spending portions of my time elsewhere next season.
I'll always be loyal to UK, and I won't complain about the process (I actually love the OAD system), but if our program loses three guys early who all received word to return? That would probably be the type of thing that would just make me consider spending my leisure time elsewhere until it actually mattered within the season. Losing one guy that way is bothersome, but expected; losing two that way has happened before; losing three that way is just deflating.
I say he returns, however. It's logical. He's a potential lottery pick next season - something Humphries and Briscoe never had a real shot at.