How do you follow up an historic upset? That's the question facing Xabi Alonso and Bayer Leverkusen as they seek to prove they belong among European soccer's top teams after ending Bayern Munich's 11-year reign in the German league last season.

Bayer Leverkusen coach Xabi Alonso was caught by surprise when the news broke that Bayern Munich star Jamal Musiala had renewed his contract until 2030 on the eve of the two teams' big Bundesliga topper on Saturday.

Bayern Munich aim to end a winless run against Bayer Leverkusen when they visit the defending champions on Saturday with a chance to 11 points clear of them at the top of the Bundesliga. The top of the table clash is also an anticipated duel between Germany's most gifted young players in the form of Leverkusen's Florian Wirtz and Jamal Musiala,