He is not top level at position he plays currently, never was and never will be. I don't care if he was amongst better players in our team, that says more about our overall football this year than about his football at CB. You would never ever even think about buying Fernandinho to play at CB. We conceded 20 goals in the league alone with him playing most of the games at back. There are probably at least 20 better CBs than him in the league. And most of them would still not be good enough for City. I know everybody loves Fern and he's the one of those that can't do a wrong thing for lot of City fans, but he is average at best CB.
He never played a minute on his old position this year and Rodri took his place as soon as he came. He is surely not going to play more next year. Now, if you asked me before the season would he play more in midfield, I'd say of course he fucking will. But it's obvious that management doesn't think he is at top level to play there anymore and that we are better with Rodri or Gundogan (or both), as much as you don't want to accept it. Management surely has far more insight into his fitness levels than we have and so they decided he'd be a CB backup this year but injuries forced them to play him regularly there.
20 better CBs? Go on, name them.
There aren't 20 better CBs than Stones or even Otamendi and he's better than both of them. You're having an absolute laugh.