Totally agree but if Kane actively wants to leave, whilst we would be totally within our right to hold him to his contract, I'm not sure keeping a potentially unmotivated player is a great thing.
None of us know Kane's mindset and for me that's a key part. If he feels he is too good for the club then do we want a player who feels he is above us? He is world class, obviously, but no player is bigger than the club
If he demands a transfer the club will sell BUT there has to be an initial bid >130m to even get the conversation started - Kane is well aware of that, so now it's down to money-bags City.