Young Manchester City talent Kayky has joined Portuguese side Pacos de Ferreira on a season-long loan.
City signed Kayky from Brazilian side Fluminense for an initial fee of £9m last summer, with the then-17-year-old viewed as a long-term prospect.
The Brazilian youth international made 13 appearances for the EDS last season, scoring six goals and assisting a further four as City successfully defended their Premier League 2 title.