It was widely reported on Friday evening that the Turkish giants had offered a deal for the Ghanaian striker.
However, reports suggest that Sparta Prague have rejected the offer that as they feel the former Dream FC forward is worth more.
Tetteh has been a Galatasaray target in the past, on more than one occasion, but Sparta Prague are not believed to be interested in letting him go
Sparta Prague simply value him higher than the proposal that was put to them by Galatasaray representatives on Friday.
Tetteh was in top-form before the winter break after scoring nine goals in 15 league appearances.
He has been likened to former Chelsea star and retired Ivory Coast captain Didier Drogba because of his playing style.