Even if he's not back in time, there may still be value there to a contender. Gives them a few months to attempt to re-sign him, and if healthy he would be the best reliever on the market.
Other than him; Roark, Shoemaker, Anderson, Thornton, and Shaw should have some value. I'd explore Bass, Dolis, Cole, Font, Alford, and Panik (lol). I don't think any of these guys have significant value, but they're all non-essential pieces going forward that I'd look to extract some value from. Let's remember that we got Hatch from the Cubs for basically nothing- kind of this FO's specialty.