There has been intense debate about who should be Julen Lopetegui’s starting striker but it may have been settled by two West Ham stars. After finding himself on the bench for West Ham’s season opener against Aston Villa, new striker signing Niclas Fullkrug made one thing perfectly clear. Fullkrug said he has not come to West Ham to be a back-up striker. But his words – thus far at least – have fallen on deaf ears. Hammers boss Julen Lopetegui has started Michail Antonio in all three Premier League games. Fullkrug showed glimpses of what he’s about when he did start in a Carabao Cup win over B…