Bayern Munich are out for revenge after Bayer Leverkusen’s Invincibles ended their 11-year hegemony at the top of the Bundesliga in record-breaking fashion. Third place 18 points behind the champions was close to humiliating for trophy-laden Bayern who have invested big to reclaim the trophy in the league season starting on Friday. For once they will only be observers because it is the champions who open the action, with Leverkusen playing at Borussia Mönchengladbach. Xabi Alonso’s side became the first team to go through an entire Bundesliga season without defeat, and also lifted the German C…