City would lose a couple of players this summer, it is certain Joao Cancelo is leaving, there is also doubts about Gundogan, Kyle Walker, Bernado Silva and Aymeric Laporte, even if they lose a couple of these players, they'd still be extremely strong next season and favorites to retain all 3 trophies they won last season. City are also going to make signings themselves, Kovacic is coming to the Etihad and they would soon send a bid for Leipzig's CB Gvardiol.
Joao Cancelo was confirmed leave Manchester City for next season, but its not big problem for Manchester City because success won treble winner this season although Joao Cancelo loan to Bayern Munich on second half season. Pep Guardiola has prepare with several replacement position after many rumor linked with Kyle Walker interested by Bayer Munich, beside still has another player from Gundogan rumor move to Arsenal or Barcelona and Bernando Silva interested by PSG.