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.
