Doug Liman has teased an ‘Edge of Tomorrow’ sequel is “constantly” requested of him. The 2014 sci-fi action flick starred Tom Cruise, 61, and Emily Blunt, 41, and the director has revealed Warner Bros. is keen for him to get to work on another instalment. He told Total Film magazine: “I do think there’s probably no better compliment to a movie than people wanting for there to be a sequel.” Liman admits he feared Cruise would reject the lead role of Major William Cage because he made him a “coward”. He said: “I didn’t know if he was going to quit the movie when I proposed to him: what if we mad…