The lowdown on the business conducted by England’s top-flight clubs before the close of the deadline It has taken two summers but Arsène Wenger has finally bought to strengthen the spine of his squad. Coming in after Petr Cech last season are players to address key positions that have needed bolstering for some time. Wenger hopes Shkodran Mustafi quickly forms a great partnership with Laurent Koscielny, while Granit Xhaka has already inspired comparisons to Emmanuel Petit in midfield…