I don't think Zidane will coach a club again in the coming season because he wants to coach the French national team or maybe he wants to coach a national team from another country because we have seen many offers coming to him to coach clubs starting from PSG or other teams but all offers Zidane refused. Well, it's likely that he will maintain his reputation quite well, maybe even he will return to Real Madrid again if ancelotti leaves later.
He won three Champions League with Real Madrid, La Liga with them too and if we consider Champions League is a highest achievement for a club coach, he got it already and made it three times, not only one time. If Zidane does not aim at winning titles at other domestic leagues beyond La Liga, he will not have reason to become a club coach again.
He can change his mind but recent years, he is very solid with his willingness to become a coach of France national team.
For Luis Enrique, he really has a lot of experience in coaching clubs, so his appointment as PSG coach was a pretty good decision made by PSG management. Therefore, the arrival of Luis Enrique is expected to make PSG stronger in the next season, especially in the UCL because PSG's big dream is the UCL trophy and if Luis Enrique succeeds in helping PSG win the Champions League. Then Enrique will be included in the history of the psg ledger.
Luis Enrique won Champions League with Barcelona but he got it only one time, less than Zidane. He only had more seasons and worked with more clubs than Zidane but about achievements, he got less than Zidane. Luis Enrique already got experience with Spain national team which is what he did more than Zidane so far in their coach careers.
Taking a job at PSG is a big challenge for Enrique and I am curiously to see how he does his job with PSG.