The 55-year-old Die Hard star also said that he is set to take on a bigger role in the new film following his brief cameo in Stallone’s action flick earlier this year.
Speaking to website Comingsoon.net, Willis said: 'I talked to Sly and he's going for all the marbles this time, and he's going to get everybody in this time.'
He added: 'Even ‘Stone Cold’ Steve Austin, who took two bullets in the last film, he's coming back, too.
“Hopefully, they'll start shooting it while we're young enough to survive.'