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London, England (SportsNetwork.com) - Arsenal will be without midfielder Mesut Ozil for around four weeks after the Germany international picked up a hamstring injury in his team's 1-1 Champions League draw with Bayern Munich on Tuesday.

Ozil was forced off the field at halftime on Tuesday and manager Arsene Wenger has revealed that he could miss up to six weeks, which comes as a huge blow to Arsenal's hopes of capturing both the Premier League and FA Cup titles.

"Ozil will be out for three weeks," Wenger initially said, before adding: "When the minimum is three, the maximum is six so let's say four weeks."

The 25-year-old arrived in London from Real Madrid this past summer and has scored four goals with eight assists in 22 league appearances in his inaugural season.