Because no one thinks the Jazz have a shot at getting Castle...I think the Jazz are going to try to trade up for Sheppard or possibly Cody Williams, mostly because that's been the story that David Locke has been selling. If that fails, they can sit at #10 and probably draft Topic. However, the Jazz have as many or more pieces to trade up with as anyone.
The Jazz might be in on Stephon Castle. I just haven't actually heard it anywhere, other than the self-proclaimed stock picker on Twitter.