Kammala wannan jumla: Bayan shekaru biyu a "Barça", Hagi ya sanya hannu a kulob din Galatasaray na Turkiyya a 1996, yana da shekaru 31. Ya kasance batun batun cinikin gasa daga São Paulo FC. Ko da yake a ƙarshen aikinsa, a Galatasaray, ya yi nasara sosai, kuma ya zama sananne sosai a tsakanin magoya bayan Turkiyya, saboda kyakkyawan aikinsa na kulob din. Hagi ya kasance muhimmin memba na ƙungiyar Galatasaray wanda ya ci gaba da lashe taken gasar zakarun Turai hudu a jere tsakanin 1996 da 2000. A shekara ta 2000, yana da shekaru 35, Hagi yana da ɗayan mafi kyawun yanayi a cikin aikinsa, yana cin nasarar kowane babban taken da zai yiwu tare da Galatasaray a wannan kakar. Mafi mahimmanci, Hagi ya jagoranci kulob din don lashe Kofin UEFA na 1999<unk>2000 bayan ya doke Arsenal a bugun fanareti a wasan karshe, bayan an tashi 0<unk>0; yayin wasan, an kori Hagi a lokacin karin lokaci saboda bugun kyaftin din Arsenal Tony Adams. Sakamakon haka, Galatasaray ya zama kulob din Turkiyya na farko da ya lashe kofin gasar kulob din UEFA. Gasar cin Kofin UEFA ta ƙungiyar nan da nan ta biyo bayan gasar cin kofin UEFA.
UEFA Super Cup, tare da nasara ta tarihi 2<unk>1 a kan tsohon kulob din Hagi na Real Madrid a cikin karin lokaci. Babban tashin hankali da wadannan nasarori suka haifar a Istanbul ya kara wa Hagi farin jini a tsakanin magoya baya, kuma ya sa tsohon dan wasan Faransa Luis Fernández ya ce, "Hagi kamar ruwan inabi ne, da ya tsufa, ya fi kyau".