DECEMBER 20, 2009 Citadel Broadcasting to File for Bankruptcy BY MIKE SPECTOR AND SARAH MCBRIDE Citadel Broadcasting Corp., the third-largest radio broadcaster in the U.S., plans to file for bankruptcy as soon as Sunday, according to people familiar with the matter. Citadel is expected to file in a deal supported by many lenders collectively owed $2 billion, known as a "prearranged" deal in bankruptcy parlance.