There were a few interesting similarities between Manchester United’s 2024 Carabao Cup opener and their 3-0 victory over Crystal Palace 12 months earlier. Alejandro Garnacho opened the scoring against a then-Roy Hodgson trained Eagles side a year ago almost to the day. The electric Argentine went one better when Barnsley arrived at Old Trafford, hitting a brace as he threatened to become the first Manchester United player since Cristiano Ronaldo to score a hat-trick. Versus Crystal Palace, Casemiro delivered a much-improved performance after a tough start to the season. Yes, Barnsley are subst…