The new centre - back pairing looked solid after the first 25 minutes of their game at the weekend .
Arsenal fans will be hoping that Shkodran Mustafi solves the defensive issues they 've had over the past few years .
The new centre - back pairing looked solid after the first 25 minutes of their game at the weekend and Arsenal fans will be hoping that Shkodran Mustafi solves the defensive issues they 've had over the past few years .