Buffalo Bills’ General Manager, Brandon Beane, has issued an ultimatum that could determine the future of Head Coach Sean McDermott following the team’s humiliating loss to the New England Patriots. The defeat itself was damaging enough, but the real storm erupted when Sean McDermott lashed out at his own fans, declaring: “Those who criticize me don’t know anything about football. All they do is sit on the sidelines and talk. A few losses don’t define an entire season.”