The former Germany international has reconsidered his apparent decision to hang up his boots, and he will now continue at the Emirates Stadium
Arsenal defender Per Mertesacker has performed a remarkable U-turn regarding his plans to retire from football at the end of the season.
The towering centre-back, 32, struggled with a knee injury during 2016-17 and made his first start in more than a year as Arsenal beat Chelsea 2-1 to win the FA Cup at the end of May.
Mertesacker was called upon by Arsene Wenger with Laurent Koscielny (suspended), Gabriel (injury) and Shkodran Mustafi (illness) all unavailable and he turned in a commanding display as the Premier League champions were denied a double.