West Ham United are threatening to derail one of Aston Villa’s summer transfer window plans it seems. The summer transfer window will be a crucial one for West Ham United boss Julen Lopetegui, and the Spaniard is planning to deal his old adversary Unai Emery a big blow. That’s because the Hammers have allegedly just entered the race to sign an attacker being courted by Aston Villa. Lopetegui is reportedly prioritising strengthening his attacking department at the London Stadium this summer. And the Spaniard is said to have a transfer budget of around £90 million at his disposal, not including …