In the 1990s, the permanently injured Rocky Balboa returned to Philadelphia to become a mentor, rather than a fighter in "Rocky V."
Stallone, who wrote all five "Rocky" movies, said there's still more of the Rocky story to tell, but the project has not been started yet, reported Zap2it.com.
"We're pushing towards that. I think it will come to fruition," he said. "It's pretty much based on what George Foreman is doing and has done with his life."
With Rocky no longer in the ring, a "Rocky VI" would be about more than just boxing.
"As you get older, you realize that life changes. Quite often you're not ready to step aside and you're not maybe ready to watch the parade go by," Stallone said. "It's about redemption and also trying to follow one's dream to the very end. What you lack in skill you may not make up in will."