George Clooney and Grant Heslov have rounded up an all-star cast for Men Who Stare at Goats, produced by Mandate Pictures.

According to The Hollywood Reporter, Ewan McGregor, Oscar winner Kevin Spacey and Jeff Bridges are in negotiations to star opposite Clooney in the feature, which Heslov is directing from a script by Peter Straughan.

Based on the book by the Guardian columnist Jon Ronson, Men Who Stare at Goats is set in Iraq and centers on Bob Wilton (McGregor), a desperate reporter who stumbles upon the story of a lifetime when he meets Lyn Cassady (Clooney), who claims to be a former secret U.S. military psychic soldier who was re-activated post-9/11.

Men Who Stare at Goats chronicles the two men's travels through Iraq and offers glimpses into the supposedly real secret Army unit tasked with creating soldiers with paranormal powers.

Bridges will play Bill Django, the founder of the psychic soldier program and Lyn's mentor. Spacey will play Larry Hooper, a former psychic soldier who is running a prison camp in Iraq.

Clooney and Heslov's Smoke House and BBC Films are co-producing the feature, which is eyeing an early October production start date.

The Men Who Stare at Goats was released November 6th, 2009 and stars George Clooney, Ewan McGregor, Jeff Bridges, Kevin Spacey, Stephen Lang, Robert Patrick, Waleed Zuaiter, Stephen Root. The film is directed by Grant Heslov.