There has been a major West Ham striker twist as one of Julen Lopetegui’s top targets snubs rival suitors but there’s a problem. West Ham are targeting another five signings in the summer transfer window. The next on the agenda, though, is a striker. Hammers head coach Julen Lopetegui and technical director Tim Steidten have brought in attacker Luis Guilherme, back-up goalkeeper Wes Foderingham and defender Max Kilman so far. West Ham will try to sign another central defender, at least one versatile full-back, a left-sided attacker, a central midfielder and a striker as part of the summer over…