It is always difficult to determine who will win the Champions League title, especially when the season has not started. Manchester City certainly have a chance to repeat their success, but to defend the Champions League title then I think it is the most difficult challenge for any coach. Pep Guardiola is expected to keep his chances good, but all the teams that will be competing in the Champions League will also be pushing for the title.
Everyone will give their views in accordance with the support for the club they are happy with, as a Manchester City supporter I might also say that Manchester City can win the UCL again next season, but on the one hand there will always be surprises in the UCL especially since many clubs will maybe already better than last season by having some of the best players in their squad.
So it's really better never to predict something that we don't know in the future, especially since all of us clubs are fighting to get UCL tickets for that of course they will play better in the UCL to get the title, so don't think that the favorite club can get the title, maybe underdog clubs can surprise us all. No one knows