What about Jerebko and Bradley (and future Memphis pick) for Gay and WCS?
With Gay already planning to opt out, it seems like he might be on the move too? Kings need shooting and more production at shooting guard. Jerebko gives them a forward who can play both positions and spot up. Slide Afflalo over to small forward and put Bradley at the off guard position. I don't think they would primarily want assets, but instead they would want impact players to try to be a playoff team with Cousins this year.
Celtics get a swing scorer who can play both forward positions and an athletic big who can defend. Both guys would help us on the boards. This makes us significantly bigger, stronger, and more athletic. Could Horford teach WCS the little things?
I mean, I don't want to give up Bradley, but with Smart and Rozier, we have the depth behind Bradley.