UCL has always become the main target by PSG since a few years ago but this club has failed many times on getting it. No doubt that if people are starting to feel doubt about the progress of PSG this season. The result will remain the same as previous seasons if PSG will fail in UCL this time.
It's impossible for PSG to extend his contract caused by mbappe still stands with his previous choice to leave from PSG after his contract will be running out. It's only matter of time till we will see him join in the other club.
IMO, this failure was due to the fault of PSG who were too ambitious to get the UCL title but logically they didn't look at the depth of their squad which must really pay attention to whether PSG has a line-up of players that is truly ready to face higher competition and also didn't look at how solid it was players that PSG has and on the one hand always change coaches every time they fail to win the UCL, that is a bad way for the team because to achieve the UCL title requires a long time for the coach to create a strong strategy for his team and organize the players to be more solid in terms of cooperation in the field.
I remember last season PSG tried to borrow Gancalo Ramos from Benfica for the reason that they were trying to see the talent that the player possessed. If he had talent equal to Mbappe, PSG would make Gancalo Ramos permanent and release Mbappe but in fact the player from Portugal failed to convince PSG management to It was made permanent because it is only natural that Gancalo Ramos fails because there is still Mbappe who is one of the mainstays and if Mbappe is not at PSG anymore I am sure Gancalo Ramos will be able to score a much bigger score.
well, in this case PSG doesn't have a replacement to fill the vacancy of Mbappe who will leave PSG after his contract expires and PSG doesn't have any power after his contract expires and must let Mbappe go.