Arsenal fear Francis Coquelin could be ruled out for two months with a knee injury sustained in Saturday’s win over Chelsea.

The midfielder suffered the injury after a strong tackle by N’Golo Kante during the first half at Emirates Stadium but tried to continue, playing on for a short time before limping off in the 32nd minute.

Coquelin will have further scans to determine the extent of the injury but there are fears he faces a lengthy spell on the sidelines.

Initial tests suggest he could be unavailable until December with Arsene Wenger admitting the injury looked “bad” as Coquelin left the stadium in a brace.

The 25-year-old will certainly miss Wednesday’s Champions League visit of Basel and Sunday’s Premier League trip to Burnley prior to the international break, with £35million signing Granit Xhaka set to deputise.

Wenger has warned against complacency after Arsenal’s best result of the season.

“Now everybody will think Basel will just be easy,” he said. “But you look at Basel’s results versus English teams [one defeat in their past ten games] and you know they cannot be easy.

In Pictures: Arsenal vs Chelsea 11 show all In Pictures: Arsenal vs Chelsea 1/11 IAN KINGTON/AFP/Getty Images 2/11 Paul Gilham/Getty Images 3/11 Shaun Botterill/Getty Images 4/11 Paul Gilham/Getty Images 5/11 Paul Gilham/Getty Images 6/11 Paul Gilham/Getty Images 7/11 Laurence Griffiths/Getty Images 8/11 BEN STANSALL/AFP/Getty Images 9/11 Shaun Botterill/Getty Images 10/11 IAN KINGTON/AFP/Getty Images 11/11 David Price/Arsenal FC via Getty Images 1/11 IAN KINGTON/AFP/Getty Images 2/11 Paul Gilham/Getty Images 3/11 Shaun Botterill/Getty Images 4/11 Paul Gilham/Getty Images 5/11 Paul Gilham/Getty Images 6/11 Paul Gilham/Getty Images 7/11 Laurence Griffiths/Getty Images 8/11 BEN STANSALL/AFP/Getty Images 9/11 Shaun Botterill/Getty Images 10/11 IAN KINGTON/AFP/Getty Images 11/11 David Price/Arsenal FC via Getty Images

“They beat Man United, Chelsea and Liverpool as well so let’s prepare properly and keep our feet on the ground. One thing in this job I know is that if you are not prepared you can be quickly hit on the head.”

