Currently Arsenal has been the only team in England that I can say for sure may give PSG some tough time if they ever get to meet, their only problem will be with their mentality, I do not trust Chelsea to stop PSG from lifting the FIFA Club World Cup this time, except PSG suffers a bad day, Chelsea is not their match currently. I hope Chelsea use this to gain some experience be just incase they get to the finals again some other time but PSG is at their peak so we not expecting any less from them.
PSG is the team with all the strengths and capabilities ready to defeat any of their strongest opponents. The Current scenario seeing and all the debates are in the great favour of PSG. That the word defeat is not made for PSG. Arsenal in this list has been on top which is ready to make a good competition with PSG. But personally i think that any club can make an effort and do their circumstances in their favour. Bayern Leverkusen and Manchester city are also good teams and by paying their concerns and attention they can get good results. But for Chelsea i think it is difficult to be the strong opponent of PSG. Chelsea's performance has been broken down from the last few periods.
No one can have confidence in Chelsea that much, because they're not in their best form compared to PSG. We all have to see how Chelsea will manage to cope with PSG game strategy on the field by tomorrow. Chelsea will put in their best performance but I don't think that it will change anything, because PSG is the favorite.