Sunday sees us lock horns with Chelsea in the Premier League, and there have been plenty of players who have represented both London clubs in the competition.
Kai Havertz will miss the opportunity to line up against his former club having netted twice in the corresponding fixture last term, and he continues a long trend of stars who have donned both red and blue.
There are 15 who have played Premier League football for both teams - but can you remember them all? You have 10 minutes so you've got to be quick!
Once you're done, challenge your friends to see if they can better your score, and try outall our other Arsenal quizzes.
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Mega quiz: Every Arsenal Premier League goalscorer](https://www.arsenal.com/news/mega-quiz-every-arsenal-premier-league-goalscorer?utm_source=arsenaldotcom&utm_medium=embedded-article&utm_campaign=news)
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