Any trade with IT needs to bring back a starting caliber PG, starting Jimmer or McCallum will be a disaster. I'm also not keen on taking on experiments like Smart or Exum, especially since Cousins and Gay are ready to compete for the playoffs now. Drafting one of those guys means a 2 to 3 year learning process, at which point Gay is probably gone and Cousins is halfway out the door.
Lowry is the only guy I see out there that would fit, but he is playing good on a contract year, he has had off locker room problems and injury/ conditioning issues in the past. In IT we know we have a true pro that will bring it every night. If you go the trade for picks and young player route than Gay is out the door, and Cousins is primed to follow. It's very much a Kevin Love situation where Cousins is loyal to the franchise that drafted him, but if he sees that the FO is not putting a playoff caliber team out, he could leave for a bigger market. The Gay trade proves that the FO is not looking to go young.
I think our best route is to try and find that facilitating defensive PG(or hope McCallum develops over the summer, which is possible). The problem right now is that we don't have any other player on the roster than the coach trusts to play PG for anymore than 3 or 4 minute stretches other than IT.
In the same way JT has become very important, he's the only PF we have that does the hard work down low and play defense that we need from that position(Landry qualifies but he's better coming off the bench due to size). JT is everything we need from the PF spot sans shot blocking, so imo he's a keeper unless you get a rim protector out of him.
The guys i'm shopping right now are Thornton, McLemore, Jimmer. Only shop IT or JT if you are getting a home run roster fix across the board.