Not even zidane can manage such a huge ego in psg all star team.
Uniting the star players at a team never easy , instead to have the full power to get a maximall result ... they flopped on the field due each ego . That's the hard part , give pep guardiola the job ... he might handled it better , that's the problem in psg.
Pep Guardiola have extended his contract to 2025 but I will not doubt that he might walk away once Manchester City win EPL (done) and Champions League title (soon) this season. That way he will be able to join PSG and fix the team after getting ride from some annoying players and make the others more disciplined.
Zidane is also a good coach but I agree that the best fixture will be done by Guardiola for PSG. There is Klopp that might help PSG in my opinion but he comes after the previous two.
Guardiola has been targeting to complete the missing piece of the puzzle for Manchester City for years. It is a Champions League title of course but it looks like they are very likely to make the dream come true this season. After adding this achievement to his collection with this team also I wonder what his future plans would be.
Indeed he still has 2 more years on the existing contract but after achieving the main target maybe he might even want to look for new adventures. I mean he would stay for one more season in my opinion but after that we might see him leaving maybe. I don't have such expectation like he decides to be open for an offer from PSG side this summer after achieving the Champions League title.
I still think Zidane is the best name for the position at PSG now also.
If it's just about combining star players then Zidane can do that too because Zidane has the experience of succeeding at Real Madrid. If you notice, Real Madrid is a team full of star players, but Zidane at that time also managed to give Real Madrid a lot of titles when Zidan was coach.
So yes, in this case a certain coach has good experience of being a coach in a big team with many star players. But one of the problems too, at least PSG is not so easy to get a coach who has good experience to overcome the problems the team is experiencing. That way, it will still be difficult for PSG to unite the star players they have in their squad.