It’s been mere weeks since Katy Perry ended her seven-year run as a judge on American Idol. But there’s already a competition brewing over who gets to take her place on the singing competition! For her part, Katy, 39, thinks country standout Jelly Roll would make a great addition to the panel alongside Luke Bryan, 47, and 75-year-old Lionel Richie — and he’s game. “Of course!” the “Wild Ones” singer, 39, said, joking: “I’ve accepted the job, and they haven’t offered it.” Other past show mentors in consideration include Jon Bon Jovi, 62, who reportedly wants $25 million to join the cast next year, and Meghan Trainor, 30. “That is my dream job, and I have emailed three awesome people who work in that world,” she’s revealed. “I have begged…