I think Emery actually dropped Mustafi at HT against Pool, so maybe he is not so sentimental after all. Problem is who does he bring on Koscielny, who is the poster boy of Wengers. "I buy what i like, rather than whats best" era. I still believe training can improve these Wenger buys, but 6 months has not improved them 1 jot so who knows. I think Emery has realised now how deep a hole he is in. We must get players in this TW or we will find it hard to even hold on to that 6th position.