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Petr Cech is struggling to be fit for Saturday’s crunch north London derby against Tottenham.
The Arsenal goalkeeper limped off during the weekend win over Everton with a calf injury.
The shot-stopper was assessed by Gunners staff on Monday and Arsene Wenger will give his No 1 every chance to prove his fitness.
But it looked unlikely the keeper would be available for the trip to Spurs, meaning Wenger will have to call upon understudy David Ospina – who has not made a single Premier League start this season.