Mate, I don't think people in here understand the concept of playing style and maximizing the team's ability, not just maximizing the stats of just one player.
People do not realize that when Kane is on the pitch, playing as a non pressing/no pace #9, we as a team suffer. People see his goal numbers and think that it's because of Kane's greatness rather than being a function of the club's insistence on ensuring that he gets his individual stats.
Juventus and RM were willing to move on from Ronaldo and there are some no-so-subtle murmurs from Man Utd questioning whether he's the right fit for the team. And this is a man that's has been and is still infinitely better than Kane, still scoring worldies at the top level and still probably one of the best goal scorers in the world. Sometimes, players just don't fit with the rest of the other players and we need to move on from them or find another place for them.
Like you said, it's maybe playing Kane in a Llorente type of role, being a striker supporting/distributing to our other attackers, or maybe we just completely try to revinvent him into a player that just focuses on distribution. His passing his still very good and he doesn't need that much pace/physicality etc. to execute his long balls.