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The England star is closing in on a record-breaking £100 million switch after City activated a release clause in his contract.
Grealish is poised to undergo a medical on Thursday and will sign a five-year contract with the Premier League champions - potentially putting him in contention for the Community Shield against Leicester City on Saturday.
The 25-year-old is ending a 19-year stint with his boyhood club and although he will now be playing for Pep Guardiola, naturally it wasn't an easy decision to make.
Kaveh Solhekol of Sky Sports says that the Villa skipper was "absolutely torn" over the decision but ultimately felt it was the right call to move on in a bid take his game to new heights.
Interestingly, it's claimed that Villa actually offered Grealish a new deal that would have seen him on more money than what he is set to earn at City.
But the motivation behind his transfer was purely down to his desire to win trophies and play at the highest level.
In scenes similar to what happened with Gareth Barry and Fabian Delph, Villa fans don't appear to be taking the departure too well going off social media.
There is a video of one supporter burning a Grealish shirt, showing exactly what they make of him leaving.
However, there is said to be no bitterness towards Grealish from players, staff and management and they all wish him well in his next step.
Grealish joined his beloved Villa as a six-year-old and has gone on to make over 200 appearances, as well as leading the club back into the Premier League.