Football is a game of opinions. A point summed up pretty neatly by the differing views towards the Manchester United star’s display during Thursday’s 3-0 win. While Alejandro Garnacho marked his seventh Argentina appearance with a first-ever assist – lauded by Albiceleste boss Lionel Scaloni for another promising cameo off the bench – Lisandro Martinez’s own display certainly split opinion. Like he did in the Community Shield – Erik ten Hag forced into a defensive reshuffle due to the absences of Luke Shaw and Tyrell Malacia – Martinez started at left-back as the World champions got three easy…