I might do it, though not with much excitement.
Young is a long ways off from being decent. His BBIQ just isn't good at all, and his athleticism is mediocre at best. He needs a few more years, probably not here. In Philly at least he'd get more reps. I have no problem with letting him go.
I have more faith in Hunter, but he needs to start hitting shots. His problem seems to be confidence more than ability.
Grant seems decent but IMO would get buried on the bench because his 3pt shooting is terrible. Brown, Crowder, and Green are all ahead of him on the depth chart. Before we know it his contract would be up and he's gone. So we likely will never know if he is Jae Crowder 2.0 or not, though he might have some chance of becoming that.
While right now he is probably better than Hunter, in the short term we actually might need Hunter's shooting (assuming it comes around) more than we need Grant's size.