West Ham United are believed to be lining up a January move to sign a central defender from one of our London rivals. With the January transfer window nearly upon us, West Ham manager David Moyes is expected to make one or two new additions to his squad. One area in particular at the London Stadium where the Hammers boss may well be keen to strengthen is his centre-back department. Kurt Zouma continues to struggle with fitness problems, whilst Angelo Ogbonna is on the wrong side of 35. Meanwhile, Konstantinos Mavropanos is still unproven in the Premier League and Nayef Aguerd is error-prone at…