Abou Diaby's excellent start to the season appears to have taken a turn for the worse.
Diaby took a bad shot and he has muscular discomfort. He is not free in his movements.
This news will have Arsenal fans on red alert. The lanky midfielder has shown some of his best form so far this season, both in the Premier League and on the international stage.
Diaby has stepped into a role of greater prominence since the departure of Robin van Persie and Alex Song. The Gunners are yet to concede a goal this season and have played some uncharacteristically secure football.
Arsene Wenger's side were particularly impressive away at Liverpool, where Diaby's pace and power overran Brendan Rodgers' struggling midfield. His ability to dictate has quickly become a key part of Arsenal's play.
With the likes of Lukas Podolski, Santi Cazorla and Olivier Giroud arriving at the club, Diaby's performances has given the new signings time to settle.
France coach Didier Deschamps recalled Diaby to the national side for the two games against Finland and Belarus. True to form, Diaby scored the winner against the Finnish in an otherwise dull affair. Deschamps praised the midfielder and indicated he is an integral part of his future plans (via Goal.com).
The player's latest injury doesn't come as a surprise. His career has been blighted with long-term mishaps. Last season, the Arsenal man made five substitute appearances and failed to start a single game in all competitions for the Londoners.
Club and country will be wishing Diaby a speedy recovery. If the French midfielder isn't fit for Arsenal's next Premier League game at home to Southampton, the Emirates crowd might have reason to worry once more.