I think Duffey and May are way to low. Both are young, have tons of service time left, and have had success at the major league level. Both also have very acceptable peripheral rates with May sporting peripheral stats saying he could be a top of the rotation guy. Those aren't tier 3 guys, and if that's what is on the table for them, you keep them. If Gibson is a tier 1 guy, I also think he's on the block. I'd be open to trading some prospects at this point to fill in some holes, but I think the team needs to be very very careful about that,as they need to trade from depth. I would be openly entertaining offers this offseason for Gibson, Milone, Nolasco (not that anyone is going to bite) and Plouffe. I'd note though, that I'd probably only be willing to trade 2 of the 3 pitchers. From the prospects, I'd probably be very open to moving D. Santana at this point as there's no room at the major league level and there's a better prospect (Polanco) at his level. He's blocked, and I don't see his value rising much. If Escobar continues his success, Polanco would likely be on the block next season as well.