West Ham United head coach Julen Lopetegui made a very big transfer mistake in the summer window as far as I’m concerned. Don’t get me wrong, I think that Julen Lopetegui made some terrific signings for West Ham in the summer, and we definitely have a better squad now than when he took over. The West Ham head coach brought in nine new players, and got rid of much of the deadwood at the London Stadium. And it has been claimed that the Spaniard is still in the market to bring in at least one more signing on a free transfer. Overall, I give Lopetegui and Tim Steidten an 8.5/10 for their summer bu…