All Kane needed when joining Munich was to hope for a title. It doesn't mean anything to be a big scorer every season but not have a title. So Kane always hopes for Munich to be mutually beneficial like Kane giving a good contribution to Munich and the team can give him the title he has always wanted.
Getting the trophy is a plus because after all it is an achievement that players want but in the end it takes hard work from every player and management in the club we cannot just rely on one aspect of the player or coach alone because after all this is a unity in the form of a club.
As for the players, they should indeed show themselves that it is not a mistake for a club to sign them because after all it is a condition where when they are contracted and paid then they must show their best for the club which roughly speaking is employing them. Likewise for Kane at the moment regardless of whether or not a trophy is received it depends on the efforts of the club in the sense that the players and coaches do their job well in the end.