He is shooting 35% this year on 6 attempts per game. I think he can hit the open shot enough that players come out to guard him. Plus in Snyder's system he would get good looks in good shooting spots for him. Snyder would love a guy that can pass, score inside, dribble the ball, rebound and shoot. That is exactly what he wants at the 4. The only question to me is if he would be healthy and happy playing here. His contract is pretty big though.
Favors is putting up about the same PER as him this year and is 2 years younger and a better defender. I also think Favors can hit the three at that kind of percentage in the next season or two if he keeps working on it, and will be much cheaper.
I would still go for the Blake trade though depending on what it is. Swing for the fences.