Arsenal now have some of European football’s best performers in their squad, after back-to-back title challenges. Mikel Arteta and Edu Gaspar have built one of the best young squads in Europe, and they have done well to sign up their best players to long-term contracts. Arsenal could even be set to reap further rewards down the line as a result of this young squad building, as they are now the best-placed team to challenge for the title after Pep Guardiola leaves Manchester City, which could be as soon as next year. Bukayo Saka and Martin Odegaard are two of Arsenal’s most important players, a…