Arsenal face concerns over Laurent Koscielny after U 21 clash against Portsmouth

Laurent Koscielny’s rehab may have a turn for the worse after he limped off early during U21 clash against Portsmouth. The French defender suffered a horrific injury in the semi-final of the Europa League last season, rupturing his Achilles tendon and missing out on a place in France's World Cup squad as a result. After long lasting rehabilitation he was hoping to get a full 90 minutes against Portsmouth but his night came to a premature end a he went off with six minutes to play. The young Gunners lost the game 2-1 against the League One leaders, but Koscielny's departure from the field will be a concern.

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