Take it as you may, but I was talking with a friend of mine who is actually from/lives in the Provo, Utah area (he's a Jazz fan). He goes to the same university as me in the Boston area, and he's in one of my summer classes this year (and was in a few classes the past year too)
I (kind of randomly LOL) asked him if he thinks Hayward stays put or leaves.
He thinks it's a given he leaves (unfortunately for him), and that the cheers at the end of the game felt more like a "thanks for all you've done for us Hayward" more than "Please stay". Apparently lots of Jazz fans think he's gone especially now with C's adding a #1 pick. If he stays, it's because of the chants, "Stayward signs" and more $$$ Jazz could offer him.
The main difference is Boston can add more talent the next few years, Jazz may have some trouble doing that without it affecting their current core/roster too. And even with Lebron reigning the East now, the West overall is A LOT harder to navigate.