Ben Foster has revealed what Bukayo Saka has to do if the Arsenal winger is to truly be considered ‘world-class’ in his position. The 22-year-old has been in sensational form for the Gunners in recent weeks, with Saka already matching his goals and assist numbers from last season and leading Arsenal’s Premier League title charge. As a result, the question to whether or not Saka can be considered world-class has ramped up in recent weeks, with former England international Foster giving his take on the subject. Ben Foster details what Bukayo Saka must do to become ‘world-class’ at ArsenalSpeakin…