In July 2007, he was bought by Fenerbahçe from Kayserispor and signed a 5-year contract. It was speculated that Real Madrid and Valencia also wanted to transfer him in 2007-08 transfer season. On June 14 Ilhan was transferred to Ankaraspor along with Özgür Çek and 4.2 milyon Euros in return for Özer Hurmacı.
In the 2006 European U19 Championships, despite Turkey disappointing their fans by losing all three of their group stage encounters, İlhan was crowned with the golden boot at the tournament scoring five goals in three appearances.
He is famous for his quick goal (scored in 15 seconds) against Sivasspor at the 32nd week of the 2005-06 season.