Filmmakers Raj Nidimoru and Krishna DK, aka Raj-DK, said the Russo Brothers, known for Marvel films, "sampled" their work before offering them Indian adaptation of 'Citadel'. "They had watched 'The Family Man season one' edit, it hadn't released yet, and they watched 'Stree'," said Raj. 'Citadel: Honey Bunny', starring Varun Dhawan and Samantha Ruth Prabhu, will release on November 7.