The report claims that the Lions are set to make a loan move for the 19-year-old striker.
Unal is however, expected to return to NAC Breda on loan following an agreement signed between the Dutch side and City.
City may however, be tempted to let Unal join Galatasaray on a temporary move so that he can gain experience playing top-tier football at a club expected to challenge for the league title.
Unal is no stranger to Galatasaray either having risen through the ranks at Bursaspor in the Super Lig.
The Turkish international striker actually became the youngest player to have ever scored a goal in the league against Galatasaray aged 16 in 2013.
Unal joined the Premier League giants on a £2 million move from Bursaspor over the summer on a four-year deal after making a name for himself as one of the brightest talents in Turkish football.