Ben Affleck talks about Kristen & "Focus" with MTV

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"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."

"Focus" is the story of a seasoned con man (formerly to be played by Affleck) who takes on an up-and-comer (Stewart) to teach her the ways of a good grift. Writer/director duo Glenn Ficarra and John Requa ("Crazy, Stupid, Love") will write the script and direct the film.

The search for Affleck's replacement continues before filming begins in April.

Source via @KstewAngel thank you.