West Ham United head coach Julen Lopetegui will be able to call upon three under-21 players after the international break ends. And all three of them will be able to make an immediate impact for West Ham. Julen Lopetegui has made a slow start to life at the London Stadium, although Saturday’s impressive 4-1 win over Ipswich Town changed the narrative somewhat. Before the Ipswich game, there was actually talk of Lopetegui getting the sack if results didn’t improve quickly, but he apparently assured the board that he will turn things around. The win over the Tractor boys was a good start, but no…