in 2006, he moved to 1. fc nürnberg, joining his slovakian teammates róbert vittek and marek mintál. in september 2006, greško signed there in the light of his injury a strong performance-based one-year contract. in october 2006, he made his bundesliga debut as a substitute. overall in the 2006–07 season, he started in 15 matches in the bundesliga, scoring one goal.