Kane has served Tottenham enough, at the age of 29 he has to look for challenges at other clubs to win trophies that have never been won while he was at Tottenham. Manchester United's interest in him is the biggest opportunity to play for a bigger club than Tottenham, at Manchester United he has an easier chance of getting a trophy than at Tottenham.
Tottenham are still fighting for a fourth-place finish in the EPL standings, but if Tottenham fail to finish in the Champions League zone, Kane will have to take a stand to get a chance to play in the Champions League.
One of his biggest steps will be joining Manchester United the following season. Before he hangs up his football boots, he needs to win trophies. He is renowned for his excellent finishing and is one of the finest strikers in the Premier League, although he was unable to win any trophies with Tottenham due to unfavorable circumstances.
Manchester United is now in excellent shape, and if they continue in this trend next season, they will do well. If he joins Manchester United, he will have a better chance of winning a trophy than if he stays at Tottenham and continues to age without winning anything.