EXCLUSIVE: Denis Leary has been set to star in Draft Day, the Ivan Reitman-directed football film that stars Kevin Costner and Jennifer Garner. Pic’s getting underway through Lionsgate and Gigi Pritzker’s OddLot Entertainment. Leary will play Vince Penn, the new head coach of the Cleveland Browns, who finds himself at odds with the team’s GM (Costner). It adds extra pressure as the GM attempts to make the right picks to lift the franchise through the NFL draft. There was a ticking clock on this casting, because part of the film will be shot at the April 25 draft to be held in Radio City Music Hall. As originally constituted in the Black List script by Scott Rothman and Rajiv Joseph, the team was supposed to be the Buffalo Bills, but Lionsgate got better incentives in Ohio and made it the Cleveland Browns. Leary has been co-executive producing IFC’s Maron and is co-writing and producing Sirens, the pilot for USA Network. His Apostle banner also produced the Detroit firefighter documentary Burn, which won the Audience Award at last year’s Tribeca Film Festival. He is represented by WME and Ziffren.