West Ham United are in pole position to bring a top quality central defender to the London Stadium this summer it seems. Julen Lopetegui is on the cusp of bringing in four new players to West Ham – Niclas Fullkrug, Crysencio Summerville, Guido Rodriguez and Aaron Wan-Bissaka, in addition to the three he’s already signed. As exciting as those new arrivals will be for the Hammers, Lopetegui still faces a big central defensive problem in my eyes. The West Ham head coach brought Max Kilman to the London Stadium for £40 million earlier on in the window. However, he definitely needs to sign another …