The Gunners completed the loan signing of Brentford goalkeeper David Raya on Tuesday, with the club giving the fans an insight into their new glovesman's arrival at Colney.
But whilst Arsenal fans were swooning over the Spaniard holding a red and white shirt, their Man City counterparts were distracted by something in the background.
Last season, Jack Grealish's BeReal post revealed Pep Guardiola's side had an image of the Champions League trophy - a piece of silverware they went on to win - on the wall at their training ground.
'Our Goal.' was also written about the photo, showing the image was used to motivate the players ahead of their bid to win the treble.
Now, fans have spotted Arsenal have a very similar-looking poster on their wall at the training ground.
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Through the window of Arteta and Edu's office is images of the FA Cup, the Premier League and the Champions League trophies - all honours the Gunners will be aiming to pip Man City to this season.
But Man City fans are now cracking jokes about the display, stating the Gunners 'want to be them'.
"They're a cringe version of us," one fan replied.
"They have no shame!" another said.
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"Arsenal will always try to copy City because of Arteta," a third wrote.
Man City and Arsenal both got off to winning starts this season, with the former breezing past Burnley and the Gunners beating Nottingham Forest.
We're sure these posters will be a talking point again if Arsenal put on another title charge!