In the fullness of time Chelsea’s surrender against Brighton & Hove Albion last April may come to be seen as the turning point. The humiliation accelerated Liam Rosenior’s demise and forced the Stamford Bridge hierarchy into a reckoning which has led to the appointment of Xabi Alonso , a shift in the transfer strategy , the JP Morgan front three and the end of Robert Sánchez’s time as the No 1 goalkeeper. For now, though, the argument that Emiliano Martínez is the final piece in the jigsaw seem…