According to Jerry Crasnick, the Astros have expressed interest in pitcher Jeff Francis. Of course, they're not the only ones, but it's still something.
Francis will be 30 in January and didn't pitch in 2009, and was 4-6 with a 5.00 ERA / 1.36 WHIP, with 67K:23BB in 2010 for Colorado. He's coming off a 4-year/$13.25m contract, and is a free agent for the first time this off-season.