The things Brantley did in college, backing people down and playing bully ball in the paint, don't translate to the NBA. But what he can do is make defensive rotations, use his wide body to stay in front of guys, move the ball on offense and rebound. The thing that holds him back is his 3pt shooting, which is in the low 30s. If he can get that up, he can be rotational.
PJ Tucker looks washed, and he's shooting around 31% from 3pt this year. The Jazz should be able to take a few games and experiment a little with their rotations. Last year, the Jazz make a point to play Rayjon Tucker 10 mins for several games. I think they should do the same with Brantley. I think what's holding him back is the 3pt shooting. The Jazz just make it a huge priority.
They need to develop him and rebrand him as a defensive wing. He has the passing ability, the ability to finish, and to hit the 3. He's also an athletic freak.