I guess you need to look at your suggestion and ask yourself would YOU do it if you were THEM and not a Celtics fan.
Sully for Hayward? I think I would keep Hayward but I don't know how good Sully can be, I question how bad he wants to be the best he can be. I guess you could put the pick with this and I MIGHT look at it if I were them. Pick has to be good if it's going to be out of the lotto. Not sure I do it even then though and I'm not in love with Hayward. I mean, really, how much better is he than Green and we already have both G8 and Big Boy...
Now you put up ET and Young for Gobert? While I think Young is gonna be a steal when he fills out and gets some pt, if I am the Jazz, I wouldn't take the chance right now. I'd give Gobert more time (and watch Young). I like ET but I could pick him up without giving up Gobert, if I really wanted him. I would have picked up ET like the Celts did by not paying him much. Turner's play doesn't get him much more money on the open market, so far this season.
I don't do it if I'm either team. If I had to do the deal, I think Cs win right now... who knows what it will look like in about 1-2 seasons when Sully is trying to get paid through play and Young is getting his chance at some pt.