Matheus Reis

Rio Ave On 26 June 2018, Reis signed with Rio Ave F.C. for an undisclosed fee. He made his competitive debut one month later, in a 1–0 defeat at Jagiellonia Białystok in the second qualifying round of the UEFA Europa League.

Reis scored his only goal for the Vila do Conde-based side on 27 January 2020, their second of a 2–1 away victory over Vitória de Guimarães. After refusing to play against the same opposition early into the 2020–21 season, he was suspended by the board of directors.

Sporting CP Reis joined Sporting CP on a five-month loan on 2 February 2021. In the summer, after his three-year contract with Rio Ave expired, he agreed to a permanent four-year deal with a €45 million buyout clause.

Reis won the 2020–21, 2023–24 and 2024–25 national championships during his tenure at the Estádio José Alvalade, contributing respectively 15, 27 and 30 games to these achievements. He made his 200th appearance for the Lions on 10 May 2025, in a 1–1 draw away to S.L. Benfica. Fifteen days later, at the start of injury time of the Taça de Portugal final against the same adversary, who led 1–0, he and teammate Maximiliano Araújo brought Andrea Belotti down as he tried to protect the ball near the corner flag, and Reis deliberately stamped on the Italian's head; no foul was awarded and Sporting went on to claim the trophy 3–1, and he subsequently boasted of his actions on social media. On 30 July, in spite of an appeal, a five-match suspension for him was confirmed.

CSKA Moscow On 12 February 2026, Reis signed a three-and-a-half-year contract with Russian club PFC CSKA Moscow, with an option to extend for an additional season.

Career statistics

Honours Bahia Copa do Nordeste: 2017

Sporting CP Primeira Liga: 2020–21, Taça de Portugal: 2024–25 Supertaça Cândido de Oliveira: 2021

Individual Primeira Liga Defender of the Month: February 2022, March 2022 Primeira Liga Team of the Year: 2021–22 Primeira Liga Goal of the Month: February 2023