Arsene Wenger has confirmed Laurent Koscielny suffered a knee problem during Wednesday’s 1-0 win over Leicester City on Wednesday night.
The defender picked up the injury during the game although he was able to continue and played all 90 minutes as Arsenal made it three wins in a row.
The Gunners travel to White Hart Lane next for a derby date with Tottenham although it is unclear if Koscielny will be fit to take on Mauricio Pochettino’s men.
“Koscielny has a knee problem. I don’t know how bad it is,” he said via The Metro.
Arsenal lined up with a back three again at the Emirates with Koscielny featuring Nacho Monreal and Gabriel as Wenger rotated his squad.
However, the Arsenal boss will be keen to have his strongest squad available for the trip to Spurs and will be hoping Koscielny will be fit in time for the game.
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The Gunners are already without Shkodran Mustafi due to injury and losing Koscielny too would be a huge blow against a Spurs side that have yet to lose at home in the Premier League this season.
If the France international were to miss out, Wenger could opt to return to a back four despite having seen his team win their last three games since changing formation.