We still remember how Zidane managed to lead Real Madrid to win the champions league for three consecutive seasons and I think that is a very difficult record for any coach to break. However, after that, Zidane began to be inconsistent and lost several titles with Real Madrid, be it the league or UCL, which made Ancelotti replace his position since the 21/22 season until now. But what is clear is that if Zidane does return to Santiago Bernabeu, I hope this time he will have a better strategy and tactics than before to make Real Madrid continue to win in league or European competitions.
Source: https://www.goal.com/id/berita/real-madrid-zinedine-zidane-carlo-ancelotti-la-liga/bltda68380b35396e2a
Zidane is one coach who would definitely be welcomed with pleasure if he did return to Madrid.
But on the other hand there is some speculation that Zidane's priority is currently Juventus because he is also very interested in returning to the club when he was young before going to Madrid which makes this also a big question mark as to where he will return because these two clubs are clubs that have been he stopped when he became a professional player.
It's just that for now Real Madrid will still prioritize Ancelotti as Real Madrid and Zidane will only be the next option. Regarding the rumors about Zidane going to Juventus, it is also quite interesting and in my opinion, the opportunity to handle Juventus next season is still open, maybe we will still see the development of this news first.