Arsenal manager Arsene Wenger has admitted that he is still uncertain whether Petr Cech will be fit enough to feature in the club's trip to Tottenham Hotspur on Saturday.
The veteran stopper was forced off during the Gunners' 5-1 victory over Everton last weekend after clashing with Oumar Niasse, with the club subsequently confirming that he had suffered a hamstring injury.
Speaking in his pre-match press conference this morning, Wenger revealed that Cech has not trained since the incident and the Frenchman will make a final decision on his participation on the eve of the North London derby.
"Petr Cech has not practiced but I will make my decision tomorrow," he told reporters. "I have no problem with [using] David Ospina.
"I will not take any risk with Cech if he is not 100% fit."
Arsenal will go into the game four points behind Spurs in the Premier League table.
