Let's say that Lindsey wants to build an athletic team that can defend and knock down the three. That means that he would probably keep Hayward and look to move Kanter (allowing your starting bigs to eventually be Gobert and Favors). Who could you trade Kanter for? I mentioned Deng in another thread, but then someone pointed out that he is in his 30's, and I didn't like that deal anymore.
Who is out there that the Jazz could dangle Kanter for?
Well without knowing which teams would be interested, I would look to dangle Kanter for a high enough pick to draft Embiid. A rotation of Gobert/Favors/Embiid would fit the bill of being athletic and mobile. Sactown, Washington or Cleveland might be a perfect trade partner. However this is a gamble due to not knowing where the pick will land.
So if the Jazz keep Hayward, draft Wiggins/Parker where is Barnes going to play?