I'd be thrilled if Boston was able to sign Hayward this summer, but it has almost no chance of happening. I just don't see why Hayward would leave money on the table to come to Boston when his own Jazz are a very good team with plenty of room to still get better.
It ain't happening.
I seriously hope Ainge isn't holding out on making a trade under some misguided idea he actually has a chance to sign Hayward. That would be completely foolish.
You remember he already signed a max deal once with another team, and then Utah matched it? So his loyalty to Utah three years ago wasn't immense (nor was Utah to him, as they pretty much told him to try to get a max deal somewhere else). On top of that, we have his former college coach, whom he's legitimately still close to, and a team that is better currently, has a better recent track record, and looks better in the future.
Would I take an even money bet that Hayward leaves Utah? Probably not, because inertia is real. But some major free agent is likely to leave this summer, because seemingly at least one does every year, and Hayward is certainly the one we have the best shot with.