A team like Chelsea should not be underestimated, as they can still cause unexpected upsets in major competitions like the Champions League. And PSG experienced this in the Club World Cup, where they were completely humiliated by the team that won last season's Conference League. So, underestimating a team like Chelsea can sometimes be a fatal mistake, as Chelsea have been able to embarrass teams that won last season's Champions League in a competition that is no small feat.
Anyone underestimating Chelsea is at their own risk because Chelsea has shown that they’re capable of making the best out of the new season we will get into now. They are a strong team and they will prove it to the world that they’re back on track and will go for all trophies in the competitions they’ll be performing in.
PSG was the best team last season and they won the champions league ahead of any other team, maybe if Chelsea was in the competition, they would have given them a tough time and won’t won it that easily. Their feat was tested in the FIFA club World Cup and Chelsea showed them they’re the best.