New West Ham United manager Julen Lopetegui must sell four players in particular this summer. Julen Lopetegui was officially announced as the new West Ham boss yesterday, and Director of Football Tim Steidten told the fans just how excited we should all be about the appointment of the Spaniard. Lopetegui, 57, apparently has big plans to shake things up at the London Stadium, and has already held high level meetings with Steidten about his potential transfer targets for the summer. David Moyes has left behind a squad that is in urgent need of fixing. It’s extremely unbalanced, with no natural l…