It looks like this will be a deciding match for both of them because whoever loses this match will have a tough time qualifying for the playoffs. They don't just have to win the last game, but they will also likely depend on the matches of other teams. If you look at the current situation, PSG might have a better chance of winning than Man City because they have the home advantage and Man City has been really bad recently. Luckily the match will still be held for quite some time, so Man City still has time to improve their performance, and they might take advantage of this January transfer window.
PSG's chances of qualifying for the playoff round do not depend on the results of other teams if they win the remaining two matches against Manchester City and Stuttgart.One point difference in the standings with Manchester City become big opportunity for PSG to replace The Citizen's position in the standings to get a slot in the playoffs round. I think PSG not have waiting the other team matches result if can secure three points at two matches left and directly will drop Manchester City outside from playoff round standings place.
Champion League season 2024/24 very interested after several top teams have drop to bottom standings position, have opportunity any top teams will face at playoff round match after difficulty reach the top eight position standings. Recently only Liverpool have been qualify to knock out round directly and the upcoming match seems Barcelona and Arsenal have opportunity will get qualify.