When it comes to sharp-tongued critics, it’s tough to top Simon Cowell. But according to the New York Post, American Idol has its sight set on someone who might be able to fill Cowell’s shoes. A source says the show’s producers are in talks to hire radio personality Howard Stern to replace the quick-witted Brit, who is in his last season. “They know he would be great TV and would clash with the other judges such as Ellen DeGeneres and the contestants. ‘Idol’ will do what it takes to sign him,” says the source. But others say the Idol talk may simply be a bid on Stern’s part to get Sirius XM Radio to keep up his $100 million a year contract.