Especially if we know a challenging fact that in history of Champions League, only Real Madrid successfully protected their Champions League titles and they did it two times. Other clubs failed to defend their titles and Manchester City will be a second club can do it if they win Champions League in a new season.
You are right, so far since 2000 only Real Madrid has successfully defended its title or won it three times in a row, while other clubs have only done it once and it took several seasons to be champions again.
Seeing the strength of Manchester City, it's understandable why many predict that this club from the English Premier League will be able to defend their title this season in the Champions League tournament, how can they currently be said to be quite complete on all fronts, on the front there is Haaland who is predicted to be a striker who shines this season and they also just bought at a high price a defender who is also said to be the best at the moment, but the problem is when they continue to strengthen their team other clubs also do the same thing because they also want to get achievements and every season there will be surprises and differences in the competition, so it will not be easy for Manchester City to defend their title, if they make it to the final it will be extraordinary, but being a champion in UCL and even managing to defend their treble winner is not an easy job.