I don't get it.  The Brewers traded for Narvaez while he was big leaguer and did not develop him in the minors.

I think a broad point is that Narvaez, by design, is an imperfect catcher. He hits RHP relatively well and when paired with a catcher who hits LHP well then the Brewers get good production from the catcher spot. Combining two imperfect catchers through platoon splits is usually better and more efficient than spending $20+ million on Realmuto - if Realmuto would even consider Milwaukee as a destination. We can’t devote 20% of our payroll to a catcher.

There's a reason why the Brewers were able to acquire Narvaez for basically a nothingburger prospect and a pick. He has limitations, and was considered poor defensively. But most catchers have limitations. In fact, considering Narvaez's defensive improvement, I really don't think there are more than 4-5 catchers in all of MLB I'd take over him. That doesn't mean he's really a stud. What it does mean is that there just aren't that many stud catchers out there right now. 

Narvaez is a solid starting catcher on a playoff-caliber team. He isn't going to put up superstar numbers, but he isn't going to hurt you with the bat or in the field either. And that has a lot of value.