Trading Hayward for a pick would mean the failure of this rebuild, unless the pick explodes, and he explodes fast. He is so integral to our offense, that we'd probably struggle to win 20 games without him.
If you want to swing for the fences, you trade Favors. Most likely, the Jazz will continue to sign marginal players, and allow players to walk once salary demands become too high.
Or acknowledging the failure of this rebuild has already happened. Once Exum got hurt and Kanter got butt hurt our two best chances at a super duper star were already gone.