I was following Kim Min-Jae when he was playing in our team. I'm a Fenerbahce fan who brought him to Europe and he got along very well with Attila Szalai when he was playing in our defense. It was customary for us not to concede a goal in most games that were them. After Kim Min-Jae left the team, we started conceding simple goals. An amazing defender. He is coming to Bayern by proving himself in Serie A as well. I don't think he has any adjustment problems at Bayern because he is a football player who is always open to learning new things.
I did not know about Kim Min-Jae before he came to Naples and played very impressively for Napoli in the past season. He has a very impressive season and even he did not expect he could play well like that and win Scudetto with Napoli. They even came to Champions League quarter finals that is another impressive journey for him with Napoli.
However we must realize that a central defender will have to play in a defensive system and he has to understand other defenders in a system to play well and support each other. They must have different skills, weakness and strength to support each other. I only see that De Ligt and Kim will have difficulty to support each other but we will have to see their real performance in a new season to assess it. They still have this pre-season training to understand each other.