He's a decent player. Really not good enough for us, at least not the first team. But our defence has become so full of similar mediocrity that he's on a similar level, and therefore he will play again, and he'll stay with us.
In the modern era, we do need players like him in the squad. The UK contingent has to be what, 8 players and he's good enough to be in the 25. So of course he'll play again and he'll stay for a long time too I no doubt. It's really not his fault he plays more than he should though, if we can't build a fantastic first 11, with a long term set defence like Rio and Vidic, then that's a management failure (not Mourinho specifically, I mean the bigger picture). Jones tries his best, but isn't top quality, but that's true of every one of our defenders, so...