Arsenal landed on a gem when they offered their vacant managerial role to a novice coach in Mikel Arteta in 2019, and they are now reaping the rewards. Arteta has helped revive a sleeping giant in Arsenal, having inherited a mess when he took on his first job as a head coach, after three years as Pep Guardiola’s assistant at Manchester City. Arsenal now have one of the biggest coaching talents in world football on their hands, but this may not have been possible if he had never joined the club as a player in 2011. Arsene Wenger was desperate for a midfield replacement for Cesc Fabregas, who ha…