Hayward over Griffin and over trades.
Younger, more durable. BG's injury history and his reliance on his athleticism to make him special is too risky to put a franchise's future on the line.
As far as trades go, Hayward is for free. I don't get how that can be overlooked.
Hayward in FA, and if you want to make a trade, you still have the assets to do so.
Bradley, Crowder and picks will fetch a serious asset.