I think JCA offers an interesting suggestion. We signed Anibal to a 2-year deal which, at his age, is questionable. But in year one, he's been really solid for us. 2.7 WAR, 122 ERA+ this year. If a starter-strapped team (the NYY come to mind, but Anibal to me is an NL guy now) has a decent prospect(s) (close to majors) to send our way (or an MLB player that we need - say a 1B), it's worth looking at. What can we expect from 36-year-old Anibal next year? Will he be able to replicate it, or be signifcantly better than Ross/Fedde? We could roll the dice on those two, move Anibal for a player we need somewhere else, and use the cash savings to sign a reliever or someone else.
I'm not sold on Fedde or Ross just yet. Ross looks better to me than Fedde; he's done it against better teams IMO and has better long-term stuff, plus a legit track record pre-injury. A 97 mph sinker/slider combo is great in the NL. Fedde looks like a great Chad Green type - some electric stuff in short stints and can be stretched to 3 innings as needed. I think there's a scenario where you move Anibal, make Fedde a 3-inning reliever/opener to keep him on the roster, and sign a cheaper option for our #4/5 starter who is a little more risky than Anibal.