Unless Philly is planning on cutting Grant, I don't see why they'd do it. I don't think Hunter AND Young would make the 76ers roster. Maybe one, but not both. So then they'd essentially be trading Grant for one of them, which I don't think they'd do.
I'd just go Hunter and Young for Stauskas. All three seem useless at this point, but Stauskas can bring back more salary in a mid season trade since his salary is higher.