West Ham have a secret weapon in the January transfer battle with Chelsea for brilliant striker Santiago Gimenez. Chelsea will undoubtedly be regretting not signing Mexican midfield star Edson Alvarez given his performances for West Ham this season. El Machin has been a revelation for the Hammers. But he could have been playing for rivals Chelsea had a deal agreed with Ajax not collapsed the summer before. Now the Blues could regret missing out on West Ham star Alvarez for another reason. West Ham’s secret weapon in battle with Chelsea for GimenezBecause West Ham have a secret weapon in the ba…