"If we miss out on the Champions League we'll be disappointed," said Leverkusen managing director Michael Schade, whose side has only a one-point lead over Wolfsburg.
Time running out for Bundesliga's bottom 3 →
Leverkusen chief executive Michael Schade says the club used a release clause in the player's existing contract to make the transfer.
Leverkusen signs Brazilian defender Wendell →
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