This link is the same one from the front page story about Hunter Pence, but since Shields was discussed in a previous fanpost I'd thought I'd put it here.
According to Stark, the Rays want a young catcher, "high-end young pitchers" and a controllable outfielder to deal Shields. If the Pirates would be interested that reads to me as:
-Tony Sanchez or Ramon Cabrera
-One or two of the Indy Lefties
-Alex Presley, Jose Tabata or Garrett Jones
In an ideal world, Owens, Cabrera and Tabata would get it done. More realistically, we're looking at Sanchez, Locke, Wilson and Presley or Jones. Of course that all depends on "high-end." If Tampa means Cole or Taillon "high end," then no thank you, let's move on.