Tomas Rosicky is struggling for fitness ahead of the crucial Premier League clash against Chelsea, Arsene Wenger has confirmed.
The Czech international scored the winning goal in the 1-0 north London derby victory against Tottenham last weekend but now faces a race to be fit for the trip to Stamford Bridge.
Arsenal must avoid defeat to maintain a realistic title challenge while a win would arguably propel them to title favourites. Arsene Wenger, who will take charge of his 1000th Arsenal game against Chelsea, has never beaten Jose Mourinho and now faces the prospect of facing up to the Special One without his in-form midfield star.
Rosicky reportedly picked up an ankle knock and faces a late fitness test before the Gunners make the short trip across London to take on their title rivals.
Wenger confirmed in a pre-match press conference: "We have a doubt for Rosicky, he will have a test this morning. Apart from that we have no major problem.
"That will be decided after training, everybody else will be available."
The Gunners have no other fresh injury concerns but Rosicky adds to a growing list of crocked midfielders at the Emirates. Arsenal are currently without Jack Wilshere, Aaron Ramsey, Mesut Ozil and long-term absentee Abou Diaby.
Kim Kallstrom is available to make his debut for Arsenal after joining on loan from Spartak Moscow in January. Arriving with a back injury, Kallstrom has been available to Wenger since March 14 but was not included in the squad for the Tottenham game.