Bayer Leverkusen had one last mission before they could finally shift their focus completely to the weekend, when the club can claim their first-ever Bundesliga title. The first leg of their Europa League quarter-finals tie against West Ham on Thursday was a tense one. Not only because of the anticipation for the league title, but also because the two goals of the 2-0 victory were scored late in the game. Now unbeaten in all of their 42 season matches and a record-equalling 28 in the Bundesliga in 2023-24, the team led by coach Xabi Alonso will be crowned champions if they beat Werder Bremen a…