This is a list of Portuguese football transfers for the summer of 2017. The summer transfer window will open 1 July and close at midnight on 22 September. Players may be bought before the transfer windows opens, but may only join their new club on 1 July. Only moves involving Primeira Liga clubs are listed. Additionally, players without a club may join a club at any time.
The 2016–17 Primeira Liga was the 83rd season of the Primeira Liga, the top Portuguese professional league for association football clubs.
The 2016–17 season is Académica's first season in the LigaPro following their relegation from the Primeira Liga last season. This season they also participated in the Taça de Portugal and Taça da Liga.
The 2016–17 FC Porto season was the club's 107th competitive season and the 83rd consecutive season in the top flight of Portuguese football. It began on 12 August 2016 and concluded on 21 May 2017. For the third consecutive season, Porto failed to win any of the official competitions in which it was involved. The last time the team had at least three successive seasons without winning a trophy was before 1976–77.
The 2016–17 season is Chaves' fourteenth season in the top flight of Portuguese football. This marked Chaves' return to the Portuguese top tier, after a seventeen-year absence.
The 2017–18 season is Chaves' fifteenth season in the top flight of Portuguese football.
The 2017–18 FC Porto season was the club's 108th competitive season and the 84th consecutive season in the top flight of Portuguese football. The season began on 9 August 2017 and concluded on 12 May 2018.
João Vasco Lima Santos de Miranda, known as João Vasco, is a Portuguese professional footballer who plays for Varzim S.C. as a forward.
The 2018–19 season is Chaves' 16th season in the top flight of Portuguese football.
The 2018–19 season was Futebol Clube do Porto's 109th competitive season and 85th consecutive season in the top flight of Portuguese football. It began on 4 August 2018 and concluded on 25 May 2019.
The 2018–19 season is Rio Ave's eleventh season back in the Primeira Liga.