Complex sentence: Trabzonspor made a contract with him in October 2009 for 2,5 years in the last day of the temporary transfer window for the Ankaraspor players since Ankaraspor is relegated from Super Lig by TFF after administrative partnership between Ankaraspor and Ankaragücü found illegal.
Split into simpler sentences: Trabzonspor made a contract with him in October 2009 for 2.5 years in the last day of the temporary transfer window for the Ankaraspor players. This was because Ankaraspor is relegated from Super Lig by TFF after administrative partnership between Ankaraspor and Ankaragücü was found illegal.