Mustafi has made five league appearances for Arsenal this season, starting each of their past four games
Arsenal defender Shkodran Mustafi will be sidelined for up to six weeks with a hamstring injury.
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The 25-year-old Germany international limped off with a first-half injury as the World Cup holders completed a 100% record in qualifying for Russia 2018 by thrashing Azerbaijan 5-1 on Sunday.
"We've lost Mustafi for about four to six weeks," said Gunners manager Arsene Wenger.
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"I don't think he will be available before the next international break."
Source: bbc.com