The missed tackles rate likely explains things like his PFF rating. He's enough of an athlete with a 7.4 RAS to cover plenty of ground; I'm not worried about that. It's whether he can fix his tackling issues.
I assume it's a fundamentals thing and not a physical limitation, and you'd expect Florida and Missouri had coaches teach players this.

Basically he fixes his tackling, or he doesn't see the field much on defense. A 22% missed rate is unplayable.