Harry Kane's Bayern Munich host Manchester United on Wednesday, kick-starting their campaign in the competition which matters most to them this season.
Despite domestic dominance which has seen Bayern win the past 11 Bundesliga titles, the club judges itself on its performances in the Champions League.
Since winning in Lisbon in 2020, Bayern have been eliminated at the quarterfinal stage of the Champions League for three straight years.
These early eliminations led to the exits of former managers Hansi Flick and Julian Nagelsmann.
Current Bayern boss Thomas Tuchel, who took over from a sacked Nagelsmann who had won eight from eight in the Champions League, is aware that making it at least to the semis is considered par for the course in Munich.
While this understanding is not new for Bayern or indeed any of the handful of modern superclubs where domestic success is assured, the big money addition of Kane makes winning now a necessity.
100 MILLION REASONS
Bayern broke their transfer record to lure Kane from Tottenham in the summer, paying 100 million euros ($108 million) for the 30-year-old England captain.
With Bundesliga titles and German Cups finding their way to Munich more often than not, Kane's move to Bayern has clearly boosted his chances of capturing that elusive first trophy.
But only by winning the Champions League will his decision to leave England be seen as an unqualified success.
The England captain said as much when unveiled in Munich, explaining "I want to play for the Champions League title, that's why I came to Bayern."
Kane has shown few difficulties adjusting to life in Germany, having scored four goals in his first four league matches.
Kane said on Monday he was looking forward to "something special"
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