To aceboon, I think he should take one because he will get almost no playing time. If AO gets 25, Drummond 25, olander 15, wolf 5, and smith 10 than that leaves no minutes. Who is going to lose minutes to Bradley? Unless Bradley comes in and plays really well he will be lucky to get 5 meaningful minutes per game. If AD and possibly AO go to the NBA after this year, there will be more opportunities for playing time next year.
Well he'll be here next year regardless. I'm not sure exactly on the restrictions of a player who is redshirting vs. not walking on. I'm not sure a player who is a walk-on and not playing can work out or do a lot of things with the team. It would depend on the level of development he can make on his own plus extra year vs. amount he can make with the team this year and little playing time.