Saif Ali Khan is to be cast in Kabir Khan's new film, on a counter-terrorist who crosses over to tackle a post 26/11 scenario. The movie is being produced by Sajid Nadiadwala who has done mass entertainers only and written by Hussain Zaidi whose books have been the story for Anurag Kashyap's Black Friday and Sanjay Gupta's Shootout at Wadala in the past.