The Coors Effect is doing a preview of all the MLB teams. Here is the link to the Pirates preview. From the entry, it looks as if people outside Pittsburgh do not realize the type of pitcher Gorzelanny is.
The Post-Gazette is reporting the Pirates have ramped up efforts to obtain Tomo Ohka. A forth unknown team has entered the bidding joining the Pirates, Blue Jays and Nationals.
My guess is either the Mariners or Mets would be the new team. Since the M's lost out on Lawrence, I would think they are the more likely of the two to join in Ohka-mania.