Thinking back to the A-rod fiasco before the season started, if you remember, Scott Williamson was the sticking point for Kenny Williams do make the trade, not Nomar Garciaparra.
With that being said, he's someone that could definitly be looked at in the closer spot for the White Sox, although I don't see the Red Sox giving up on him, injury or not.
Another option, and it's only if he doesn't get his act together this september/in the offseason, but BK Kim.
Personally, I feel the best market, and something that needs to be taken advantage of are these overpaid players who can be had for virtually nothing ala Jose Contreras.
We all know what BK Kim is capable of doing when healthy both as a starter and as a closer, and I think he's in a very similar situation that Contreras was in where he can't perform his best with all the pressure on him.
I really want this kid to succeed, even with that finger situation and all, I just like him, and would love to see him on my second team where he can be the stud he was in Arizona.