Luis Guilherme joined West Ham United yesterday, and he shared his first words after officially becoming a Hammers player. Exciting young Brazilian Luis Guilherme is now a West Ham player, and Tim Steidten promised that there is plenty more where that came from. The Hammers paid around £25.5 million to secure the signing of the 18-year-old Samba starlet, and big things are expected of him at the London Stadium. Guilherme has all of the talent and potential in the world, and his skillset, impressive pace and wicked left foot will undoubtedly thrill the West Ham fans over the next few years. The…