To be honest, it's an opinion I've been forming for a while and just happened to vent on this thread.
I think he's just very average if I'm honest, injured or not. He doesn't have anything like the technical skill of the players around him. I am not expecting every player to be like David Silva, but Walker's ability to control the ball in tight spaces is leagues below the rest of our team; he has bugger all vision and panics every time he runs forward, inevitably picking the wrong pass and/or overhitting it. I am not his biggest fan, let's just say that.