West Ham United have reached an agreement to sign midfielder Gustavo Sa from Famalicao for a fee of €20 million. The Premier League club negotiated the fee down from Famalicao's initial asking price of €25 million, and the transfer represents the largest sale in the Portuguese club's history. The 21-year-old had attracted attention from across Europe and had previously rejected a €17.5 million contract offer from Saudi Pro League side Al-Ittihad.