Arsenal fans were on cloud nine when they purchased Riccardo Calafiori in the summer. The 22-year-old had helped Bologna reach the Champions League and there was a lot of hype around his name. Even though Mikel Arteta watched his team produce the best defensive record in the Premier League last season (29 goals conceded), added to the fact that Jurrien Timber was returning from a long-term injury, Calafiori was still added to the club’s backline. Arsenal fans first got a taste of the versatile defender during their win at Aston Villa in August, before he announced himself in incredible style a…