Roger Clemens has decided to start collecting some of the $3-million he?s owed by the Houston Astros, who signed him to a personal-services agreement in 2004. That may mean he?s finally ready to retire, but it could also mean he?ll extend his pitching career for a smaller base salary. Sources tell Metro Canada the Blue Jays are seriously thinking of pursuing both Clemens and his pal, Andy Pettitte.