The Manchester City squad has been perfectly formed based on the success achieved last season
They are the treble winners in the last season with one of three titles is Premier League trophy but in Premier League, they only succeeded to take the first position in very late weeks of the season. After that they never lost it again to Arsenal, their main competitor in Premier League.
the departure of Ikay Gundogan will not have a major impact on Manchester City performance because there are still 10 other players who are very integrated with the philosophy used by Guardiola.
Gundogan is a first player bought by Pep Guardiola when he came to Etihad that shows the importance of Gundogan. I believe Manchester City will be able to replace Gundogan but if saying his missing won't affect them, it is untrue. It will affect Manchester City somehow and it's hard to find another midfielder who has similar skills like Gundogan.
Riyad Mahrez departure is not too worrying, he is not the first choice in Guardiola's squad, although Manchester City are not looking for a replacement for Riyad Mahrez it will not affect Manchester City appearance this season.
Mahrez lost his position to Bernado Silva and was an alternative player in the last season. His departure will have less effects on Manchester City than the departure of Gundogan.
Guardiola will try to bring Manchester City back to the highest point in the UCL this season, his experience in managing strategies when busy schedules are needed to prevent his players from getting injured or exhausted due to being forced to play too often. Manchester City's potential in the UCL this season is still very large, they must support each other to advance to the final round, Guardiola tactics have also greatly supported Manchester City journey this season.
Guardiola is smart and flexible to substitute his players and it is helpful during a long season. We must talk about the depth of player resource in Manchester City which helps Guardiola management a lot. It does not come to him automatically but it is gained after a very long transfer execution in many seasons. PSG also spent a lot of money for transfers but they don't have a good team like Manchester City.