West Ham United are eyeing up a bargain summer transfer window deal to sign someone who impressed in the Premier League last season. The summer transfer window is a vitally important one for West Ham boss Julen Lopetegui, as he tries to rebuild the unbalanced squad left behind by David Moyes. The Hammers boss has already made three signings this summer – Luis Guilherme, Wes Foderingham and Max Kilman. Whilst it’s been a good start to the summer window for West Ham, a lot of work still needs to be done, and Lopetegui is said to be prioritising strengthening his attacking ranks even further stil…