After voicing his disappointment at the team’s woeful defending in pre-season, Julen Lopetegui has launched a move for a Brazilian defender. Spanish journalist Guillem Balague warned West Ham stars Julen Lopetegui has a ruthless streak over the summer. When telling Hammers fans what they can expect from their new head coach, Balague revealed Lopetegui does not suffer fools in getting his teams where he wants them to be. Lopetegui has already been brutally honest with his West Ham players. After consecutive 3-1 defeats to Wolves and Palace in the US, Lopetegui pulled no punches. “(The performan…