I really don't know how much longer PSG will go on like this. I expected them to struggle and maybe even lose the game honestly.
However that 4-1 score at the end was unbelievable. Mbappe looked really thoughtful. I think he would definitely leave the team at the end of the season if they go on like this.
Before Mbappe leaves, Luis Enrique should maximize Mbappe potential in the remainder of his contract. I think it's natural that if Mbappe leaves and pursues his dream of winning the UCL with another club, it's impossible for PSG to do the same job to tempt Mbappe to stay at the club.
Newcastle I highly doubt that it will be stopped by any of these teams here,they made short work of PSG while PSG had beaten Dortmund which in turn draw the last game against Milan.The fact that Milan has not scored a single goal so far in this competition for me says a lot about them not being in the right form despite leading the Serie A in their local league.For me Newcastle will be the first of the group and most likely they will win against Dortmund while for Milan vs PSG game I don't have any idea of how the game will develop,most likely it will end in a draw.