Firstly, family comes first even if you give Zidane all the players in the world if his family isn’t comfortable he is not going to take the job. Personally I don't want Zidane or Rodgers at Manchester United. I would rather Erik Ten Haag or Ragnick. These two managers can guarantee Classical football philosophy and tactical balance and that is what plies in the English Premier League. These managers can manage the egos in the dressing room and implement a tactical plan that works, and they have the charisma and reputation too. We have all seen what Ten Haag has done and is still doing with Ajax. But with all these Hiring of managers, if the Management is till involve in decision making, the club wont move forward.
You rather have the manager of Ajax that raises young players versus the manager who had 3 UCL wins in a row? Something nobody has done? I mean sure believe in whatever you want to believe in but in a situation like United is in, if they could get Zidane then I believe they will be 10x better for sure.
I am not saying that Zidane would accept such an offer, I literally believe United is beneath what Zidane should accept, at this point only 3-4 teams in the world Zidane should go for, and like you said only if his family is ok with it. Those clubs are City, PSG, Bayern, Madrid once again. I do not see him managing any other team, those are more than enough for him and anything else would be too beneath his talents.