West Ham United reportedly face a very big transfer problem this summer, all courtesy of Aston Villa. The upcoming summer transfer window will be a very big opportunity for West Ham to strengthen their ranks. Numerous new signings are needed, with up to 12 players being linked with the London Stadium exit door. David Moyes is being heavily linked with an exit from the Hammers, with Paulo Fonseca amongst the list of names being eyed up as potential replacements for the Scot. However, whoever is in charge come the summer is irrelevant really. Signing some top-class players will be key, especiall…