The Cubs probably have no interest, but IMO Pedro Martinez could really help the Cubs pitching. He could be the 5th or 4th starter, with Randy Wells becoming the Cubs "6th starter" and work in the bullpen. Sean Marshall would be the much needed LHP the Cubs need in the bullpen.
A Carlos Zambrano,Ryan Dempster,Ted Lilly, Rich Harden, and Pedro Martinez starting rotation would make the Cubs pitching even better.