Arsenal's Laurent Koscielny suffers ankle knock in training

Arsenal defender Laurent Koscielny is reported to have picked up an ankle injury while on the club's pre-season tour of Asia.

The Frenchman limped out of training on Sunday before being assessed by medical staff.

The extent of the problem has not yet been revealed by Gunners manager Arsene Wenger.

Arsenal continue their tour on Monday when they face Nagoya Grampus in Japan.