The 18-year-old come on as a substitute against Roma in a pre-season friendly yesterday which City went on to win.
“I had a very good period of time at the youth academy. After that period I started playing for the first team.” Ünal said in a video interview with Manchester City’s official website.
The young striker went onto say that his goals for the national team were what caught City’s attention.
“But actually I’m famous because of my performances and goals with the national team.
“I scored so many goals and I started to attract the attention – most probably the reason behind my transfer.”
Ünal has already made his first senior Turkish international cap despite being just 18 and netted 24 times in 25 games at U16 level before progressing to the U18 and U21 sides.
The young striker also holds the record as being the youngest player to ever score in the Süper Lig in 2013 when he netted against Galatasaray.
The Turkish international was recently listed in the Guardian as one of the 40 best young talents in world football.