West Ham are close to completing the signing of their first summer acquisition, Gustavo Sa, from Famalicao. A deal for the 21-year-old attacking midfielder is almost complete, with a fee of around £17 million having been agreed, which is below an initial valuation of £21 million. The transfer is set to become the most expensive sale in Famalicao's history. The move to the London Stadium occurs as the Championship club looks to add new players to its forward line. Sa departs the Portuguese side after becoming the youngest player to make 100 appearances in Liga Portugal.