Manchester United will kick off their second competition of the season when they welcome Barnsley to Old Trafford on September 17. Erik ten Hag‘s side come into the game full of renewed momentum, having dispatched Southampton 3-0 away from home in the league. Barnsley, on the other hand, lost by the same margin away to Stevenage, so the pressure will be on Manchester United to avoid an upset. United U21s have already beaten Barnsley this season, so there is no way the senior team can afford a slip up, even though they come into the game with some injury worries which Ten Hag has given an updat…