I'm not going to compare any player, especially with players like Zidane but the fact about Bellingham is he is so young and he joined Real Madrid when he is 19y old, in the other hand Real Madrid is a team where you can have good coaches to improve your skills, that's why I think a player like Bellingham can have the chance to even become better than Zidane if everything goes well for this players because he got enough potential for it.
Anyway, Zidane is a legend. And I personally wouldn't to brave compare Bellingham with Zidane either, because Zidane has proven to be a genius player, his achievements also look very great. But yes I agree Bellingham can have the chance to even better than Zidane, if everything goes smoothly without injury hindrance of course. Because if the injury will hinder the progress of his career, but right now Bellingham is at a great club, hopefully he can quickly adaptation and develop there.
there's no need to compare Zidane to Bellingham and it's obvious that it's about seniors versus rookies.
I mean Zidane is a former football player who has a very great talent and has a lot of experience and at his age he is already a pretty good coach.
Unlike Bellingham, he is a young player who has almost the same talent but doesn't have as much experience as Zidane.