I don't think it would matter what we spent and who we have in Defence. It will remain sh*te until Arsene/Bouldy sort out the tactical side of our game. It's really not just defence, for sure Defence is and has been a problem for years, but the team as a whole, suck at Defending/closing down/doing the ugly stuff.
I'm really tired off all of us going on about the same things every single season, we have a multitude of problems with the team and I don't believe any of them will be fixed until Arsene is gone.