Manchester United’s 7-0 hammering of Barnsley in the Carabao Cup was a performance filled to the brim talking points. The ever-burgeoning brilliance of Alejandro Garnacho. Two emphatically-taken finishes from a revitalised Marcus Rashford. And handful of eye-catching displays from three players who, if many Manchester United supporters had their way, would have been shipped out this summer alongside Aaron Wan-Bissaka, Anthony Martial and Donny van de Beek. Now, of course, it’s ‘only’ Barnsley, as fun-sponge rival fans seem desperate to point out. But Man United should have a lot of games like …