The Germany central defender has proved an excellent signing since arriving from Valencia in the summer , adding genuine defensive backbone in partnership with Laurent Koscielny .
In mitigating circumstances , they have also lost Shkodran Mustafi to a hamstring injury .
The Germany central Shkodran Mustafi has proved an excellent signing since arriving from Valencia in the summer , adding genuine defensive backbone in partnership with Laurent Koscielny .
In mitigating circumstances , they have also lost Shkodran Mustafi to a hamstring injury .