Manchester United are through to the fourth round of the Carabao Cup after a comfortable 7-0 victory over EFL League One side Barnsley at Old Trafford. Marcus Rashford scored a brilliant individual goal for Manchester United before Antony won and converted a first-half penalty to make it two for the Red Devils. Alejandro Garnacho scored twice for the Red Devils before Rashford added a fifth for the Red Devils in the second half. Christian Eriksen got in on the act late on twice to make it 7-0. Here are five things we learned from United’s comfortable victory over Barnsley. Marcus Rashford cont…