West Ham have announced the signings of midfielders Mateus Fernandes from Southampton and Soungoutou Magassa from AS Monaco.
Portugal Under-21 international Fernandes joined in a deal worth more than £40m and becomes the club's third-biggest signing, behind Sebastien Haller (£45m) and Lucas Paqueta (£51m).
The 21-year-old, who has signed a five-year contract with the Hammers, left Sporting for £15m in 2024 to sign for Southampton, who have made a substantial profit after one year.
He made 46 appearances for Southampton, scoring four goals and providing seven assists.
"I'm very excited to play for West Ham," said Fernandes.