Corridors of uncertainty are clearly his arch nemesis, which means lots and lots of coaching and, if possible, mentoring on the pitch by a wiser and more composed CB partner. If anything, his athleticism buoys him with belief he can always get to balls that slower defenders know instantaneously that they cannot; if you’re going to thunder from point A to C, there’s a lot to be exploited within “B” and someone like Vinicius will be glad to teach you that with all his stutter steps and inviting openings that are illusory bait.
Would take this player in a heartbeat - you won’t face many teams in a season that can overload him with information as well as having the smarts and skill of players like Vinicius - for 70% of a league campaign, what he is, even now, is just fine, and for the remainder, you hope to coach and guide nuance and subtlety into his game, but it looks like he’s going to be problematic for Bayern in the closing phases of the CL, which is literally the last place in football where you can be uncertain or playing on instinct.
Basically, he’ll look two-fold worse than he actually is as issues will be exacerbated by the best players in the world.