It’s a chant made by the Genç Fenerbahçeliler group. It describes the true face of Galatasaray.
Songtext
Gambling ads, Seçil’s funds, Black-market deals — their only way to get by, A place of controversy, where they’re looked down on, At Sami Yen, we’ll face your childhood dreams as rivals, La Lay Lay Lay La Lay La Lay La Lay, La Lay Lay Lay La Lay La Lay La Lay…