Cillian Murphy has said he was “desperate” to play a lead role for director Christopher Nolan.The actor, who plays the lead in Nolan’s upcoming historical biopic Oppenheimer, has previously played supporting roles in five of the director’s films; Batman Begins, The Dark Knight, The Dark Knight Rises, Dunkirk and Inception.Speaking to Associated Press, Murphy said: “I have always said publicly and privately to Chris, that if I’m available and you want me to be in a movie, I’m there. I don’t really care about the size of the part.“But deep down, secretly, I was desperate to play a lead for him.”He added: “We have this long-standing understanding and trust and shorthand and respect.