Per Rotoworld per Baseball Prospectus:
Perhaps the Astros were reading S3F, or hell, just looking at their rotation depth chart. If they sign Pedro and Hampton, and both stay healthy (big ifs) they could certainly be quite a surprising team given their lineup. Plus a team with star power like that would have to be good for the gates.The Astros are "on the verge of signing" Pedro Martinez, according to Baseball Prospectus.
The Astros don't figure to be contenders this season, but their quest for two future Hall of Famers in one week indicates delusions of grandeur. Still, even as a shadow of his former self, Pedro would slot in nicely with Wandy Rodriguez behind Roy Oswalt. More importantly, it would push Brian Moehler and Mike Hampton down the rotational pecking order.