Emily Blunt is in talks to join ‘The Smashing Machine’. The 41-year-old actress is said to be in negotiations about appearing in the movie opposite Dwayne ‘The Rock’ Johnson, who is to play MMA fighter Mark Kerr. According to Variety, Blunt is in talks with A24 about portraying Kerr’s wife, Dawn Staples, in the motion picture. The movie is to be directed by Benny Safdie – one half of the sibling duo that helmed the acclaimed picture ‘Uncut Gems’ – in his solo directorial debut. Should Blunt sign up for the project, it would see her reunite with Safdie, who she starred alongside in Christopher …