According to Andrew Baggarly of the San Jose Mercury News:
Scouts are buzzing that the Giants are actively looking to upgrade at backup catcher and long relief. One possibility is catcher Rob Bowen, whom the A's released Tuesday.
Baggarly suggests the Giants' trade chips include pitchers Luis Perdomo and Merkin Valdez, as well as outfielder Eugenio Velez.
A handful of catchers remain on the free agent market, including new member Josh Bard. Tracy Ringolsby wonders if the Rockies will renew their interest in Bard. The Marlins, however, don't appear interested according to MLB.com's Joe Frisaro. The free agent market also features about a dozen relievers.