Let me rephrase.
It's way too early to allocate major resources to draft Burke's future replacement. If I'm the Jazz, I first try to trade up into the late 1st for a guy like Delon Wright (who has the defense and positional flexibility to be a great fit) or I try Alec Burks in Trey's role and see how he fits. The answer might already be on the roster.
Worst case scenario for me is that Trey sticks, and continues to struggle. In that case, the Jazz shop him at the deadline, move him for peanuts and either draft a replacement with the 2016 pick or find a guy through trade or free agency next offseason.
I'm totally okay trading Burke if they get a guy early that they covet (like moving up to 8 or 9) but I'm not completely sold that he can't get better and be a solid reserve this upcoming season. I've always been kind of meh on Burke. Delighted they have Exum.