Erik ten Hag has made progress at Manchester United this season and his influence has extended beyond Old Trafford this winter, with a number of his first-team players performing well at the Qatar World Cup after benefiting from working under him.
Marcus Rashford has been outstanding for England, scoring three goals, which has catapulted him into the conversation for the Golden Boot, Luke Shaw has started every match for England and he's enjoying a renaissance on the international stage, while Harry Maguire has responded to his critics, although he perhaps hasn't benefited from working with Ten Hag as others have.
Bruno Fernandes has been wonderful for Portugal, contributing two goals and two assists, Casemiro has been Brazil's best player and Raphael Varane and Lisandro Martinez have featured for France and Argentina respectively.