I don't think Arroyo has any trade value. I'm not sure what a broken Kiké can bring back, but I think I'd be more likely to keep him for the stretch run.
Sox need to decide if they want to try to advance in the playoffs of play for the future. They have some expiring contracts they can deal.
As jacko has said, the worst thing they can do is to get nothing out of these expiring deals. It's great for the Yankees, but bad for the Sox long term.