Yaya was at his best when he had Fernandinho/Barry/De Jong playing behind/alongside him. It's not so much that his abilities/athleticism have left him, it's simply the tactics that we play. We rightly play them tactics because we're a better team for it, but people saying that Yaya is a disgrace/nowhere near good enough for this level don't understand that the reason he's not at his best is because he's not playing a system that suits him. It was only a few months ago that he was far and away the best player on the pitch in an FA Cup Semi Final which is why Pep gave him another 12 months.