Manchester United thrashed Premier League champions Leicester City as boss Jose Mourinho dropped captain Wayne Rooney from his starting line-up. Chris Smalling's header put United ahead before Juan Mata finished off a slick move with a crisp strike. Marcus Rashford and Paul Pogba - with his first goal for the club - both scored from corners, with Demarai Gray's spectacular long-range strike the only consolation for Leicester. Rooney came on in the 83rd minute. "If he has to go on the bench, he goes on the bench. If he has to stay at home, he stays at home."