Former CBS CEO Les Moonves filed to suit last year to block a Viacom-CBS merger that was backed by Sumner Redstone's daughter Shari Redstone, president of NAI and vice chairman of both CBS and Viacom. As part of the settlement of that case, Redstone agreed not to raise the possibility of a Viacom-CBS merger for at least two years. Moonves was ousted in the wake of numerous sexual misconduct allegations.