Additionally, Galatasaray will pay 10% of any future resale profit to French side Monaco.
The 24-year-old Singo, who has 31 caps for the Ivory Coast national team, has signed a five-year contract on a salary of 4.8 million euros per season.
Galatasaray confirm signing of defender Wilfried Singo from Monaco
Galatasaray have signed Ivory Coast defender Wilfried Singo from AS Monaco for 30.8 million euros ($36.06 million), the Turkish Super Lig club said on Thursday.