The summer transfer window is kicking off all over the place for West Ham United right now. West Ham are deep in talks to sign Aaron Wan-Bissaka, Crysencio Summerville and Niclas Fullkrug, with Julen Lopetegui desperately keen to overhaul his squad. The Hammers head coach has already made three signings this summer, but even if he gets deals for those three names mentioned above over the line, more work will be required. Namely, the addition of a another new central defender will be vital. Max Kilman looks like a brilliant signing, but the 27-year-old needs a top player to play alongside him. …