Pierzynski played in a bandbox last year. Left-handed power hitters usually struggle at Fenway Park, due to the deep dimensions. I'm skeptical that Pierzynski has developed 25 HR+ power this late in his career. If he starts hitting 10+ out again, he's suddenly an average catcher with .700 OPS numbers. I don't think a rebuilding team should be handing out multi-year contracts to players like that.