I think Detroit only would make this move for IT (the medical would be an issue, though). And I would strongly consider that before letting him go for nothing in 2018. Obviously, drafting Fultz is part of it.
Starting five: Smart/Bradley/Hayward/FA*/Horford.
Bench: Rozier/Fultz/J.Brown/Crowder/Zizic + nº 12 pick (Adebayo, Markkanen, Giles).
*A minimum FA to give a veteran presence, for example Nenê.
I think it makes sense. We have better defense, while Hayward and the developmen of Jaylen Brown + Fultz can somehoy replace IT's offense (obviously, with a different system).