The Thunder will look to add this offseason, using their plentiful cap space and treasure chest of picks/young players. The Jazz certainly have a direction, but Walker Kessler did not fit in Hardy's system and became a bench big playing behind John Collins at center and while Collin Sexton had a good season; he does not seem to be in the long term plans for the Jazz.
In this mock I had OKC cutting down some cap space in the trade in order to offer Anunoby a lot, probably an overpay to be honest, but most of the time free agency just comes down to who offers the most money. In the trade, OKC add a much needed backup big in Kessler and a very good 6th man and backcourt partner for Wallace. Diagneault has shown to like running 10+ deep, even in the playoffs, and this gives a really really solid 10 man foundation. The jazz move on from a good young center, but does not fit their system, and add an intriguing point guard option in Giddey, a young wing in Dieng, and some draft capital. This trade simmers down to basically 1 first, 1 swap, and eliminates the chance of the jazz not picking top 10 and their pick conveying in the 11-30 range to the thunder.
Thunder seem atop the west with a new rotation:
Gilgeous-Alexander | Dort | Anunoby | Williams | Holmgren
Sexton | Wallace | Joe | Williams | Kessler