The defender has penned a two-and-a-half-year contract at the Club and becomes Head Coach Rita Guarino’s second signing of the January transfer window. The 19-year-old joined Brighton & Hove Albion at the age of six and progressed through the Seagulls’ youth teams, and then at Chelsea, before signing for Sporting Lisbon in September 2024. The attacking full-back has also enjoyed success on the international stage, representing the Young Lionesses from U16 to U20 level, featuring in every game at the 2024 UEFA Women’s U19 Championships where England reached the semi-finals. And now, returning to England from Portugal, Bose is looking forward to wearing the famous Claret & Blue. @ria.bose #WestHam #WSL #Lionesses #RiaBose #Woso