Sagna left the field on a stretcher during the first half of the 3-3 tie at the Emirates Stadium. The fullback suffered a similar injury against Tottenham in October which required surgery and sidelined him four months.
“It is a broken fibula, it is the same leg” Wenger said on the club’s website. “It has not happened alone, he has been kicked on the leg.”
France opens its Euro campaign June 11 against England in Ukraine.
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