Every player who has very reliable talent definitely wants his career to continue to develop in big competitions and Harry Kane has the choice to join Bayern Munich because he also wants to win the champions league title and win trophies in other competitions to show that his career will not be in vain, unlike others. When he was at Tottenham, even though he tried hard to appear strong, he scored lots of goal, but it was all in vain because Tottenham only relied on harry Kane, so it was impossible to reach big competitions, while winning title in premier league was very difficult.
In Harry Kane's debut season with Bayern Munich, it is still not certain that he will be able to immediately win the Champions League trophy because this season the competition in the Champions League is still quite tough. But if it's just to win a trophy in the Bundesliga, I think it's very possible because Bayern Munich is still able to dominate quite well in the Bundesliga. In the Premier League the competition is also quite tight so it is not easy for Tottenham to dominate very well because their rivals here are also much better than Tottenham.