3. He debuted as a teenager
Mateus Fernandes made his senior debut for Sporting Lisbon in October 2022 in a Primeira Liga win over Casa Pia, aged 18 years and three months. He appeared ten times for the club’s first team, scoring his first goal in an Allianz Cup win over Farense in November 2022. He also appeared in a UEFA Champions League group-stage tie at Tottenham Hotspur and UEFA Europa League knockout play-off round tie at Midtjylland in Denmark.
4. He spent a season on loan at Estoril
Mateus Fernandes spent the 2023/24 season on loan at Primeira Liga club Estoril, playing 35 times and helping the club reach the Allianz Cup final, where they were beaten on penalties by Braga. He scored one goal, a winner, in a 1-0 Primeira Division win over Estrela Amadora, and registered two assists as Estoril finished safely in mid-table.