Question: What person was manager for Bayer Leverkusen immediately before the man who is the third-highest goalscorer in the history of Bundesliga?
Sentence (from "2017–18 Bayer 04 Leverkusen season"): This is the 60th season for Leverkusen in the BayArena, located in Leverkusen, North Rhine-Westphalia, Germany.
Relevant evidence: No