As reported by Turkish-football.com’s Emre Sarıgül writing for the Guardian on Friday Ünal completed a medical before officially signing for the Citizens on Monday.
The 18-year-old striker could play his first game for City during the summer camp, the first of which is behind closed doors, against Adelaide United, next Wednesday.
Ünal became City boss Manuel Pellegrini’s first major signing of the transfer window and is reported to have joined for a £2 million fee.
The young striker has an extraordinary international record, hitting the back of the net 24 times in 25 games for the U16’s and has already been called-up to the U19, U21 and senior Turkish national team.
The Bursaspor striker also became the youngest player ever to score in the Süper Lig in 2013 and already has seven first team goals for the Green Crocodiles.
Ünal has become the first Turkish player to join the Citizens and the youngest player from the Süper Lig to make a move to the Premier League.