If this post could be true ...
The odds are 50/50 that Shields is dealt.
Shields is not carrying max value this year because his ERA is up, but I'd very much like to have him if it was largely a personnel swap or perhaps invloving some salary support.
Ignoring this year's won / loss for Beckett, I think it might make sense for both clubs to swap these two players, with the Sox picking up salary support OR letting the Rays pick between Salty and Shoppach as a kicker since they're looking for a catcher.
I think the pitcher / pitching coach have just as much to say about pitch selection, and I'm really not worried about going the 2nd have without one of three catchers.
I think it's so imperative to move Beckett that I wouldn't hesitate to include other lesser pieces in the deal.