True , United may have lost star goalkeeper David de Gea to injury in the warm - up .
United 's not the first time this season that Van Gaal has attempted to shift the blame -- and his excuses are starting to wear thin with supporters .
True , United may have lost star goalkeeper David de Gea to injury in the warm - up , but it 's not the first time this season that Van Gaal has attempted to shift the blame -- and his excuses are starting to wear thin with supporters .