Readers, beware! This is only a rumor at this point. According to a Joblo source, Sandra Bullock may board Sylvester Stallone's upcoming action flick "The Expendables."

As I mentioned, none of this is confirmed, and Joblo's source says Bullock's involvement is not a "done deal."

Also starring Sly, Jason Statham, Jet Li and Randy Couture, the film follows three men as they take on the mission to infiltrate a South American country and overthrow its dictator to free the population.

If Bullock were to join the project, it would mark her second collaboration with Stallone. The two previously worked together on "Demolition Man" in 1993.

Bullock has two films lined up for a 2009 release: "All About Steve" and "The Proposal."