Arsenal midfielder Jack Wilshere has sustained an ankle injury that will sideline the Gunners star for three weeks, it was announced Tuesday.

The promising 21-year-old has endured a tough spell of injuries during his young career, missing most of last season with knee and ankle problems.

A superb start to the new campaign signaled that Wilshere may have surpassed his injury concerns, but now the starlet looks set to miss Arsenal's Champions League clash at Bayern Munich on Wednesday and the club's subsequent Premier League tilt with Swansea City as well as England's FIFA World Cup qualifying double-header against San Marino and Montenegro.

"Jack Wilshere is out," Gunners manager Arsene Wenger said. "He has an inflamed ankle, the other ankle to one he injured. He will be out for three weeks and will not be available for Munich, Swansea and not for England.

"Hopefully for the Premier League he will miss only one game. After there is an international break. We can slowly prepare him."