EXCLUSIVE: The Dallas Buyers Club Oscar winner is close to boarding Barry Levinson’s booming ensemble in the David Mamet co-scripted Assassination. Jared Leto’s deal isn’t closed yet, but is nearing, we understand. He’ll join the JFK conspiracy movie which already counts his fellow House of Gucci star Al Pacino, Jessica Chastain, Brendan Fraser and Bryan Cranston. The murder mystery […]