LENS, FRANCE - JULY 22: Per Mertesacker of Arsenal before a pre season friendly between RC Lens and Arsenal at Stade Bollaert-Delelis on July 22, 2016 in Lens. (Photo by Stuart MacFarlane/Arsenal FC via Getty Images)
LENS, FRANCE - JULY 22: Per Mertesacker of Arsenal before a pre season friendly between RC Lens and Arsenal at Stade Bollaert-Delelis on July 22, 2016 in Lens. (Photo by Stuart MacFarlane/Arsenal FC via Getty Images)