West Ham United head coach and director of football Tim Steidten both made one huge oversight in the summer transfer window. Julen Lopetegui and Tim Steidten worked in tandem to secure some terrific signings for West Ham in the summer, and we definitely have a better squad now than when David Moyes left. 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. Despite all of the exceptional new signings Lopetegui and S…