In Ken Rosenthal's article on the impending free agency of Carl Crawford lists nine possible suitors for the Houston-born soon-to-be-incredibly-wealthy more-hyphen-than-hype left-fielder:
Crawford is from Houston, but the Astros probably cannot move the contract of left fielder Carlos Lee, who is owed $18.5 million in both 2011 and ’12. Crawford in center over Michael Bourn? Perhaps, but baseball people view Crawford as better in left. He has made only 11 appearances in center since 2004.
So the Astros could be interested, but not with the price tag he'll command.