Born in Vila Velha, Espírito Santo, Miguel began his career with local side Desportiva Ferroviária before joining Fluminense at the age of ten.
[1] Despite winning minor youth titles with Flu, he moved to Vasco da Gama in 2015, but only stayed 11 months at the latter before returning to his previous club.
[2] He made his professional debut on 6 June, coming on as a late substitute for Nino in a 2–2 away draw against Cruzeiro, for the year's Copa do Brasil;[2] aged 16 years, two months and ten days, he became the youngest player to debut for Flu in the professional era, and the tenth overall.
[5] He made his Série A debut on 15 July, replacing fellow youth graduate João Pedro late into a 1–1 home draw against Ceará.
[7] On 11 August, he was declared a free agent after winning the Court action;[8] Fluminense also released a note stating that the club will appeal the decision.