As a layman I think Rios should just be kept for now. Let the Sox try to have their fun for the rest of the season, and give some of these prospects a few starts to get some experience.
Do some major trades in the offseason if needed, but I don't think Rios will garner a lot of value right now, despite his talent. From what I can gather, the vibe right now is that hes too expensive and teams aren't going to budge.
Just a hunch.