"Sly had invited me to be in "Expendables 2" but I was too busy filming "CZ12" and couldn't make a commitment to the film. But he did extend his invitation to the third movie, which I agreed on the condition that I will be appearing as more than just a minor role with a few scenes," said Chan.
Chan added that he expressed his hope that the third installment of the popular franchise would run along the lines of a 'buddy-buddy' movie should he be starring in it, and Stallone obliged.
During the conference, Chan also touched on another upcoming project with the working title of Skip Tracer, for which he hopes will include his Rush Hour co-star Chris Tucker.
"The script is currently viewed by Chris Tucker. Personally, I feel that if he were to pick it up, it would be better if we turned it into "Rush Hour 4" but I do think that three movies for the franchise is a perfect ending. It would be better to start a new buddy movie with someone new."
Source: Cinema Online