Tbf Joey, he cost them 40m not 30m, has played close to 60 games so has featured he just hasn't ever made the position his own, not being good enough for city and not suiting their system doesn't mean much though, arguably the best team in the world atm, and require s very specific type of cb, ottamendi imo looked equally as poor for them until this season as well and now looks a top centre back.
Less pressure here, less pressure to play like a centre mid on the ball etc, could see us land a top more old school cb if he's in just required to defend first rather than play like city want there defenders to do.
Remember being unimpressed when we signed Distin as well, he done brilliant though, at 26 he's at his peak, new club, change of team could work wonders.