Emma Stone is in negotiations to join the cast of upcoming period crime drama Gangster Squad. The move would reteam Stone with Crazy, Stupid, Love co-star Ryan Gosling & Zombieland director Ruben Fleischer. Stone would join a cast that already boasts Sean Penn, Ryan Gosling, Josh Brolin, Anthony Mackie, Michael Pena & Giovanni Ribisi. Variety reports that Stone would be taking the role of 'Jean', a sharp-tongued siren caught in a love triangle. The film is based on a series of articles by Paul Lieberman based on the crime fighting exploits of a squad of elite Los Angeles officers in the 1940s charged with stopping vicious Los Angeles mobster Mickey Cohen [Penn]. Screenwriter Will Beall is a former South Central LA cop. Bring it.