The World Cup-winning defender is yet to feature for the Gunners this season due to injury but will remain with the club until June 2018 The former Germany international’s current deal was due to come to an end in June, but the north London outfit have taken up an option to keep hold of him for an extra season. Mertesacker is yet to feature this season due to an injury, though Wenger is hopeful he will be back in action in the coming weeks.