Sylvester Stallone worried about Expendables sequel

Sylvester Stallone is feeling under pressure!

The action hero, 64,  is currently working on the Expendables 2 script and has old action movie rival John Claude Van Damme lined up for a role. But sources close to the star say Sly is already anxious about pumping up again.

“Sly is excited about the sequel but even though the film is months from shooting he is concerned about being physically ready,” reveals one Hollywood insider.

“He’s not getting and younger so it’s not easy keeping up with the kind of regime he insists on. He’s still hoping to get a director in for Expendables 2 to allow him more time to pump up.”