if we persist with a back three,Bartley is the massive weak link,and quite a few posters in his defence point out that he is right footed so he is the fall guy as he plays on the left side of a back three,my suggestion is to play try Brunty in this position in the back three,he can control,pass and move out with the ball,he is not too bad in the air either,it will be a massive improvement on Bartley in this position