I think the goal is to sign one free agent big, and trade Gerald Wallace, James Young, and some combination of draft picks to Utah for Gordon Hayward. My guess on picks is our 1st this year and the Minny protected 1st/ 2 seconds. Wouldn't be surprised if it were agreed to on draft night and processed after the July moratorium, so that Hayward could be advertised to the free agent big. Hayward can't be officially traded until July 10th because the Jazz matched his offer sheet last summer.
Given the Celtics need at the SF position, the Hayward/Stevens connection, and that Jazz matched in part to not lose Hayward for nothing, I just really expect this trade to happen. It makes sense for both teams.