We've seen some spectacular goals this season - and Alexis' third against West Ham United has been voted as our best in December.
The Chile international raced on to a through ball, before dummying to strike it in the area and then lifting it over the helpless Darren Randolph.
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Mesut Ozil's well-taken header against Stoke City finished in second place, with Alex Oxlade-Chamberlain's goal against West Ham in third.
Click on the video above to watch our top-three Arsenal goals from December.
More polls and quizzes to follow soon!
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