The fairytale rise of Östersunds FK from lower-league minnows to top-flight club and Swedish Cup winners witnessed a new chapter in 2017-18. English manager Graham Potter took his team into European football for the first time in their history, and an opening match on a journey that took them to an eventual knockout defeat by Arsenal at home to Turkish giants Galatasaray. Here, in an exclusive with The Coaches' Voice, Potter reveals the tactics that inspired a 2-0 win over the former UEFA Cup winners and European Cup semi-finalists.