As reported by TheWrap on Thursday (July 28), screenwriter Robert Lawton has penned a script for a spin-off film around Dolph Lundgren’s character Ivan Drago, who appeared in 1985’s Rocky IV and 2018’s Creed II.

Stallone shared the report on Instagram on Sunday (July 31), where he criticised longtime Rocky producer Irwin Winkler and Lundgren for allegedly going “behind his back” in regards to the project.

Another Heartbreaker... "I just found this out,” Stallone wrote. “Once again, Irwin Winkler, this PATHETIC 94-year old PRODUCER and HIS MORONIC VULTURE CHILDREN, Charles and David, are once again picking clean the bones of another wonderful character I created without even telling me.

I apologize to the fans. I never wanted ROCKY's characters to be exploited by these parasites. By the way, I once had nothing but respect for Dolph, but he NEVER told me about what was going on behind my back with the character I created for him!!! "Real friends are more precious than gold.”

Stallone shared a second post where he called Winkler a “blood sucker” and a “parasite producer."

In a post addressing Stallone’s remarks, Lundgren claimed he was “under the impression” that Stallone was involved in the project.

“Just to set the record straight regarding a possible Drago spin-off,” Lundgren wrote. “There’s no approved script, no deals in place, no director, and I was personally under the impression that my friend Sly Stallone was involved as a producer or even as an actor."