Question: Who was the football star born in 1974 that left Bayer Leverkusen to join another club, after the club did not win the Champions League and domestic league in 2001-02?
Sentence (from "Bayer Giants Leverkusen"): Bayer Giants Leverkusen is a professional basketball club, part of the Bayer Leverkusen sports club based in Leverkusen, Germany.
Relevant evidence: No