a massive contract for a guy who is coming off the bench - behind two younger players who are already better than him. As a team, the Celtics will do fine. They have great young talent and strong leadership in Ainge and Stevens. But that contract sucks so bad for them.
Meanwhile, having Hayward leave allowed the Jazz to give Donovan Mitchell full command of the team as a rookie, and the Jazz are much better off for it. Mitchell's future is very bright. As for Hayward's future in Boston.... not so much.