Well, in Cherki's case it's not so crazy to understand he'd have an admiration for Zidane despite the gap in years and probably not having consciously seen him much at all while he was playing because of their similar backgrounds. However, I think there are so many more considerations that players have to take in now when making a move, and I think playing for an idol is fairly low on the list of priorities. I think Zidane winning the CL 3 years in a row is far more enticing for young players by now looking to move to a team than what he did as a player where they were too young to remember.
Madrid is a bigger draw than Zidane, so is Barcelona a bigger draw than Messi, who can actually be a potential negative because so much of the club revolves around him, which is why Neymar left and Griezmann's come under fire playing out of position. But those two teams have dominated a generation that will grow up wanting to put on that shirt themselves. Those two clubs just have a handicap in their favor with every young players out there, maybe English/German youth players being the exception. Howwever, I think Camavinga would be much better off developing a bit more before already taking the leap to a Madrid where the competition will be stiff, the adaptation could be very difficult, and the playing time and public might not be on your side.
I think United can present a solid case for being one of the more attractive destination for this point in his career, you have to sell the idea of reviving this sleeping giant because it wasn't that long that United was one of the best clubs in the world. Ole's got a proven track of trusting young players, he's not a great tactician by any means but he's managed to get the most out of young players than anybody that's come through the club since SAF, and I think that will continue in that trend. I think playing for United, even if it's just for one contract, and then if he's not convinced to stay here, and he's kept his trajectory as a player developing, he can move to Real Madrid/Barcelona as a truly established player that's coming in to be the starter.