MUNICH, GERMANY - FEBRUARY 15: Laurent Koscielny of Arsenal goes off injured during the UEFA Champions League Round of 16 first leg match between FC Bayern Muenchen and Arsenal FC at Allianz Arena on February 15, 2017 in Munich, Germany. (Photo by Chris Brunskill Ltd/Getty Images)

MUNICH, GERMANY - FEBRUARY 15: Laurent Koscielny of Arsenal goes off injured during the UEFA Champions League Round of 16 first leg match between FC Bayern Muenchen and Arsenal FC at Allianz Arena on February 15, 2017 in Munich, Germany. (Photo by Chris Brunskill Ltd/Getty Images)