Arsenal boss Wenger must nurse crocked Koscielny through to January market
The 28-year-old pulled out of the France squad for the international games against Spain and Serbia.
Wenger is wary to push Koscielny's Achilles too hard, which means the Frenchman will sit out of Capital One Cup games and will not be risked if he feels any pain ahead of Premier League and Champions League matches.
Any long-term Achilles injury to Koscielny would give Wenger a major problem.
For the big stories and the banter follow us on Twitter: @tribalfootball