Arsene Wenger has been dealt a triple injury blow to his defence during their pre-season tour.

Both Laurent Koscielny and Wojciech Szczesny have picked up injuries and now left-back Nacho Monreal might join them on the sidelines.

French defender Koscielny withdrew himself from the side's training camp after picking up a knock on his ankle.

The medical staff that travelled with Arsenal for their tour assessed Koscielny immediately after the injury, but they are yet to announce the damage that he been picked up by the Frenchman, but he is expected to miss the friendly against Nagoya Grampus.

As for the Gunners' goalkeeper, Szczesny has picked up a lower back injury and is ruled out of the friendly tomorrow and could even miss more of the Far East tour.

If two injuries wasn't bad enough for Wenger, it has now been revealed that his Spanish left-back Monreal could miss up to two months with a back injury.

The Spaniard hasn't gone with Arsenal for the pre-season tour because of his participation in the Confederations Cup, so the club are waiting until they return to England to get the full detail on the defender's injury, but there is a strong chance that he will miss the opening start of the season.

Even without the injury, Wenger is apparently worried about whether or not Cazorla and Monreal will be ready for the start of the new season, but now the left-back has a reported back injury, he could be on the sidelines for even longer than expected.

So with Thomas Vermaelen, Koscielny, Szczesny and Monreal all carrying injuries, Wenger will surely look to bolster his defence this summer, with Swansea City's Ashley Williams strongly linked with a move to the Emirates.

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