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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- Read the match report from the West Ham game
Click on the video above to watch our top-three Arsenal goals from December.
More polls and quizzes to follow soon!Copyright 2017 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source