We set ourselves up for it so it no longer surprises me when we concede shit goals.
Not one defender ever seems to open their mouths, we have Otamendi who is new to the league, Mangala who doesn't come across very imposing or commanding, Sagna a reliable RB but not a world beater or someone to rip someone apart like Zaba and Kolarov/Clichy just go about their jobs and have good and bad games.
Zaba and Kompany are cornerstones for our team, no matter what money is spent.
Kompany alongside Ota or Mangala will bring our defence back in shape, Zaba if he gets his fitness and sharpness back will push our defence even further.