The Orioles, Athletics, Blue Jays, Padres, Nationals, and Diamondbacks have all expressed interest in free agent first baseman Derrek Lee according to SI.com's Jon Heyman (via Twitter). We've heard that Lee wouldn't mind playing for Arizona, and the interest from the O's and A's is nothing new. Heyman reiterated the D'Backs interest in Xavier Nady as well.
Lee, 35, had surgery to repair a torn ligament in his thumb after the season. He's expressed a desire to join a playoff club for 2011, but calling any of those six teams a contender would be generous. D'Backs GM Kevin Towers was the Padres GM when Lee broke in with the team in 1997, and the running theme of the offseason has been Towers bringing some of his former players to Arizona. Nady obviously fits the bill as well.
I examined Lee's free agent stock back in October.