Dylan Axelrod - this guy has some potential here. He's got good strikeout numbers and limits walks so I'd consider him for one spot.
Some of these lack upside or just are hurt (or got demoted) so I don't know why you even bothered mentioning them
Agreed there's not much here to choose from.
Chris Archer would have great value if they moved him to the pen for keeps. That's where his nasty fastball slider combo would work well as a potential closer.
My second choice would be Tyler Skaggs. Just too much upside here to let sit in FA.
Add Justin Grimm, Juan Nicasio, Jake Arrieta, and Chris Archer to your 'watch' list if you have one.