At the age of four, Santos was introduced to futsal in an effort to lose weight. He fell in love with the game, and began playing as a defender, before being moved up to midfield during his time in Vasco da Gama's youth academy.[3]
On 6 March 2021, at the age of 16, Santos made his professional debut for Vasco da Gama as an 85th-minute substitute in a 1–0 Campeonato Carioca loss away to Volta Redonda.[4] He would go on to make his league debut in a 3–0 Série B defeat away to Londrina on 28 November 2021.[5] In the 2022 season, Vasco manager Zé Ricardo made Santos a starter in the team, propelling his career to new heights.[3] He became the youngest goalscorer in the club's history on 7 June 2022, netting in a 3–2 Série B victory away to Náutico.[3][6]
Chelsea
On 6 January 2023, Vasco da Gama announced that Santos had departed the club to join Premier League club Chelsea.[7]
Loan to Vasco da Gama
On 2 March 2023, he returned to Vasco on loan until 30 June 2023.[8]
Loan to Nottingham Forest
On 25 August 2023, Chelsea announced Santos' season-long loan to Nottingham Forest.[9] He made his Premier League debut against Liverpool at Anfield. He was recalled from Nottingham Forest on 4 January 2024 after Santos only made two appearances in 5 months.[10]
Loan to Strasbourg
On 1 February 2024, Santos was loaned to Ligue 1 club Strasbourg until the end of the season.[11] The loan was extended for one more season on 2 August 2024.[12]
^Manuel Valladares, José (12 February 2023). "Brasil conquista Sudamericano Sub20 por 12da vez" [Brazil conquers South American U-20 for the 12th time]. Associated Press (in Spanish). Bogotá. Retrieved 13 February 2023.