So far, if we look at Tottenham's condition in the last few seasons, they are far from having a trophy, even for next season, I doubt they can compete with several other clubs to be in the top five of the standings. And recently I heard a clause about Kane leaving, this will obviously be a big problem for Tottenham because they most likely won't be able to compete optimally when their main player decides to leave. Meanwhile, on the other hand, it won't be that easy to let Kane go unless they really want a large amount of money for his departure and sacrifice their goal to be in the best position at the end of the competition. In the end, I wouldn't really expect anything significant from the performance that Tottenham will display next season because in the previous few seasons, they haven't been able to provide anything significant in the competition.
Harry Kane's contribution is very significant for Tottegam if indeed Kane leaves this season it means that Tottengam is no longer one of the elite clubs in the Premier League they will lose their identity and will need to find a new one, obviously that will take time. The rumors about Kane are not over some of us believed that he would leave and Tottenham don't have to stand in his way anymore if not then Tottenham will lose the opportunity to sell him at a high price, because he is getting old. If we pay attention, based on transfermarkt.com, Harry Kane's market value continues to decrease every season.