I think (maybe this is more hope) that it's just the Jazz being smart about asset management. It's better to keep JC, hopefully on a good deal, then let him go for nothing. If JC has another year similar to last season statistically he could fetch a late first rounder from a contender come trade deadline.
Also, I'm still slightly perplexed by how much Snyder didnt like Burks compared to how much of a greenlight JC gets. I know a big bulk of it is Clarkson's shot math is much better (he takes a higher volume of "good" shots), but Clarkson is still a terrible team player and I just have a hard time Snyder is truly in love with that as much as he just saw it as a Band-Aid. Time will tell.