Barring a blockbuster type trade, the only one on this list that I see actually being dealt this off-season is Kepler. Beyond that, it's more subtraction by addition and I don't know what scenario that makes sense in.
With the logjam of corner types, they need to see who actually performs before jettisoning any of those guys. That seems better suited for a deadline deal, not the offseason. Trading pitching on this team makes no sense unless they're bringing an equal replacement or upgrade back.
Gordon is one of those weird types of player that has no real trade value, but is one of those players that every good team needs. At best , he's an add in for a team.