Arsenal 3-2 Manchester City: Sanchez stars as Gabriel suffers injury
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![Arsenal 3-2 Manchester City: Sanchez stars as Gabriel suffers injury](http://static.goal.com/3555100/3555102_gallery.jpg)
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The Chilean was on top to lead the Gunners in a tight pre-season win, but the team may see their options at the back limited even further with the latest mishap