Both Rozier and Hayward are thriving in Charlotte. I think the Celtics front office would love to have a do-over on Rozier. There was talk two months ago of them trying to reacquire him in a trade, but it has yet to materialize.
As far as Hayward goes I think he needed to go to a team that was able to give him the minutes and shots that he needs. He wasn’t ever going to get that with Jayson Tatum and Jaylen Brown above him in the pecking order.