Sylvester Stallone has signed with the William Morris Agency.“Rocky Balboa,” which Stallone wrote and directed, is set for a Dec. 22 release from MGM. He’s readying “Rambo IV: In the Serpent’s Eye,” which he’s also written and will helm. He scripted biopic “Poe” and hopes to direct it for Avi Lerner’s Millennium Films. Hyphenate was previously repped by ICM.
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