He is also looking to improve relations with affiliates and is working on a plan to turn around MTV, a top priority for him, he told Reuters in November. Last week, he replaced Viacom's head of distribution, Denise Denson, a longtime executive who worked closely with former CEO Philippe Dauman. In September, National Amusements called on Viacom and CBS to consider recombining, 10 years after Viacom was spun off from CBS. Shari Redstone had been in favor of recombining the two under Moonves, sources have previously told Reuters. Industry speculation that the two might rejoin increased this year after the Redstones prevailed in a power struggle that resulted in Dauman's departure. A Viacom spokesman confirmed it had received the letter from National Amusements, which was first reported by CNBC. A CBS spokesman declined to comment.