Sylvester Stallone leaked the news on Twitter, posting: "WILLIS OUT... HARRISON FORD IN!!!! GREAT NEWS!!!! Been waiting years for this!!!!"
Stallone then attacked his former co-star, suggesting that he and Willis had butted heads over salary demands, writing, "GREEDY AND LAZY... A SURE FORMULA FOR CAREER FAILURE."
A spokesman confirmed that Stallone was referring to Willis in his follow-up tweet, but would not elaborate on the issue.