Bayer Leverkusen boosted their Champions League hopes in the Bundesliga by winning as their rivals slipped up on Saturday while bottom club Greuther Fürth were relegated with three games remaining. Leipzig failed to repeat their midweek German Cup semi-final success over Union Berlin as late goals from substitutes Sven Michel and Kevin Behrens condemned them to a shock 2-1 defeat after Yussuf Poulsen’s opener. “It’s important that we clear our heads now,” said Leipzig coach Domenico Tedesco. “The last few weeks have been very intense.” His side have a Europa League semi-final first leg with Ra…