Alberto Baio

Juventus On 15 January 2025, Costa transferred to Juventus on a contract lasting until July 2029. The transfer fee was €12.5 million over four financial years, €1.3 million in additional fees and up to €2.5 million in bonuses. During an injury crisis with five defenders missing, he made his debut on 26 February in the quarter-finals of the Coppa Italia at home to Empoli, playing the final six minutes in place of Andrea Cambiaso as his team drew 1–1 and lost on penalties. Five days later he made his Serie A debut in a 2–0 win over Hellas Verona at Juventus Stadium, playing the final half-hour as a substitute.

Costa played 14 games for the club from Turin, assisting three goals. He made four appearances at the 2025 FIFA Club World Cup in the United States, in which he and Khéphren Thuram each set up two goals in a 5–0 opening win over Al Ain of the United Arab Emirates.

Porto On 24 July 2025, Costa returned to his homeland's top flight by signing for Porto. He joined on a five-year deal for a transfer fee of €15 million, with a potential €1 million in bonuses and a €65 million buyout fee; Juventus retained 10% of a future transfer fee. He had previously been approached by rivals Sporting CP. He played 29 games as his team won the league in his first season, and he was named in the Team of the Season; the club conceded 18 goals all season and took four of the defensive and goalkeeper positions in the select team. He scored his first goal for Porto on 4 April 2026 in a 2–2 draw at home to Famalicão. After the match, opponent Sorriso accused Costa of spitting at him, which Costa denied. A month later, the disciplinary commission of the Portuguese Football Federation closed its investigation due to finding no video evidence.

International career Costa was first called up for the Portugal under-18 team for two friendly matches against Norway in Lisbon in June 2021. In March 2023, he was capped twice for the under-20 team against Romania and the Czech Republic.

Personal life Though not one of his legal surnames, Costa chose the surname for his career, in tribute to his stepfather who raised him from an early age.

Career statistics Club

Honours Porto Primeira Liga: 2025–26 Supertaça Cândido de Oliveira: 2026

Individual Primeira Liga Team of the Season: 2025–26