"Basically I'm doing this movie called "Live By Night" and I'm trying to meet this schedule... so that I can have it released at the right time," he explained at the event where he picked up a Special Achievement in Filmmaking award for "Argo." "And basically I haven't gotten enough writing done; it became clear that if I took that job — it was in Buenos Aires for three months — I'd have to miss the deadline. I had to choose between getting the movie out when I wanted to or doing that movie. Reluctantly I chose the latter but I love those guys, I love Kristen. I was really excited to work with her. I think the movie is going to be fabulous. I'm sure they'll find a great guy for it."
Source | Via