If Zidane wants to, he can head PSG and coach them. I'm sure PSG would like to see a coach like Zidane in the team. Although the rumors with Zidane increase from time to time, they are usually not true. It is not surprising that such a rumor comes out for PSG again. Of course, Zidane can be one of the best options if they want to win the European cup, as well as the goal of winning the French league 1.
I doubt that PSG will be a good option for Zidane. Zidane had a lot of backing and support from Madrid and Madrid is a different team from PSG. Madrid had everything they needed when Zidane was there. Winning the Champions league is not the same as making the team strong. Madrid was already strong but PSG is not the same. They are very inconsistent and they need a structure.
Zidane can't do that to be honest. What PSG needs is a coach that has a system and can build players. Luis Enrique can do that.
If Enrique gets the backing and support required at PSG he can turn them into a fearful force.