I recall Chelsea is not a title contender for UCL this season. They have very young squad, and lack of exp in UCL. So, i doubt them to compete for the title race, but i don't underrated them consider they sometimes created a surprise.
Beating PSG in CWC may be the only reason why they're still worthy enough to consider. I hope your wish will be coming true, though the chance is literally small.
Judging by the quality of their current squad, I agree that Chelsea isn't a contender for the Champions League title this season because some of their players are still quite young and inexperienced. However, if you look at the club's history, they have won the Champions League before, despite their performance declining significantly in the Premier League. Beating PSG in the Club World Cup doesn't guarantee Chelsea has a much better chance in the Champions League, as they sometimes play well and then miss opportunities to maintain consistency.