Marlins catcher Paul Lo Duca, whom the Diamondbacks tried to acquire two years ago when Randy Johnson almost was dealt to the Dodgers, has said he would be interested in playing for Arizona and trade talks might be in the works. Lo Duca fits the role the Diamondbacks have in mind for upgrading the catcher position, and the club could steer his $6 million salary into the budget with the Vazquez trade and other moves the front office plans to make.