On Sunday, City right-back Kyle Walker posted a video of himself on Instagram wearing a Sky Blues shirt with his three Premier League medals draped around his neck.
The video was liked by Grealish, who teamed up with Walker as part of England's Euro 2020 squad this summer, reports the Daily Express.
The City Xtra Twitter account later pointed out to Man City fans that Grealish had liked Walker's video.
De Bruyne had the City faithful even more excited when he later took to Twitter to like the City Xtra tweet.
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