I know that most clubs are still strengthening their squad but that doesn't mean that they wouldn't be able to pick form in no time. Next season will be a big challenge for PSG in the Champions League.
Paris Saint-Germain would face a lot of challenges next season in the Champions League. The Champions League will be very competitive next season because many clubs are trying to strengthen their squads, and if they do strengthen their respective squads, there would be a lot more competition in the league than that of last season.
The competition would make it hard for PSG to continue their form in the league; challenges would keep showing up for many clubs next season, and the league would be unpredictable and very hard for small clubs who don’t have much experience in the league. The Champions League next season would really be interesting to watch.
Their good performance gave them lots of rivals last season and some would be coming back for revenge this season so they need to be prepared for the challenge ahead it's not going to be easy cause Chelsea has exposed their weakness in the Club World Cup but I trust PSG to tackle that error, I'm suprise they didn't make much signings though.