I would be shocked if Theo doesn't return. He has too much to prove. I think he will prove it, but I also think the pros will insist on seeing him prove it. Theo also has the best chance to leap way up in the rankings by returning.
Berry is very likely to return, too, because he has things to work on. But I suspect the pros already have a good idea of how good he can get. So it's a more a question of whether they want to spend a pick on him than whether he needs to prove something.
Now that the early entry stuff is past us, the view of this draft may have changed for Berry. In earlier mocks, there were a bunch of PGs early in the draft, but only a few late in the draft. So entering might not have been such a bad idea because there wasn't much competition in the range where Berry was likely to be selected. But some of the latest mocks show as many as 6 PGs in round 2 - including some good ones.
Tony is 50:50. They will try to assess just how high his ceiling is and how long they will have to pay him before he gets where they want him to be. Even if they think he has a way to go, I still think it's likely that some team will be willing to spend a late 1st round pick on him. Then it's up to Tony to decide whether that's good enough.