A calf injury forces Laurent Koscielny to miss Arsenal's training session ahead of their Champions League meeting with Bayern Munich.
Arsenal may have to make do without the services of Laurent Koscielny for tomorrow's Champions League match against Bayern Munich.
The French defender missed training this morning with a calf complaint that has troubled him over the last couple of weeks.
Reports had claimed that the 27-year-old would be fit for the visit of Munich to the Emirates Stadium.
However, his absence earlier today has resulted in him being regarded as a major doubt to feature against the Germans.
The Gunners are already without left-backs Nacho Monreal and Kieran Gibbs, who are cup-tied and injured respectively.