Arsenal boss confirms Wilshere's injury

Arsenal manager Arsene Wenger has insisted that he is unsure as to when Jack Wilshere will return to first-team action following an ankle injury sustained during the club's 2-0 loss to Borussia Dortmund in the Champions League last night.

The Frenchman is adamant on ruling a long-term problem to the England midfielder, given his ankle injury crisis in recent years.

"Wilshere has turned his ankle - it's difficult to say how bad it is." He said. "I'm a bit cautious because of his history. Normally, it's not too bad."

Arsenal face-off against Aston Villa at Villa Park in the Premier League this weekend.