Harry Kane will obviously improve Manchester United if he moved over there, but it does not mean they will surely win the EPL, i don't think Manchester United as a team can win the EPL next season, they still need at least another season with Erik ten Hag before they'll think of winning the title.
Look at Arsenal, they thought they were on their way to the EPL title last season, but in the most important part of the season, City showed them why they have more experience to handle the pressure of the last few weeks of the season. Right now City are just unstoppable in the Premier League and i can't see any team usurping them.
There have been numerous speculations surrounding Harry Kane's future in recent media reports. Manchester United has shown interest in Kane, but they have stated that if he truly desires a move, he must submit a transfer request to them. On the other hand, the owners of Tottenham seem reluctant to let Kane go to United and believe it would be better for him to join Madrid or Munchen. In my opinion, Kane would be better off joining Munich if he wants regular playing time and the complete trust of the coach. In Madrid, there is a possibility that Kane could become a backup if he fails to demonstrate his best performance in the initial stages. Another significant factor for Kane is that if he moves to Madrid or Munchen, his chances of winning the Champions League title are slightly higher than at Manchester United.
Staying at Tottenham would be futile for Kane as he has never tasted championship success there. With the quality and number of goals he has achieved, I believe it would be best for him to depart from Tottenham.
Yes, now Kane is a point of attention in the transfer market. At present various speculations continue to emerge related to their future. But in my opinion it is time for Kane to immediately leave Tottenham to look for new challenges while feeling the title before retiring from football. Currently it is a fixed time for Kane because at this time he is still able to look mighty. I am sure wherever he will be anchored he will definitely be the mainstay on the front lines.
Manchester United seems to be very interested in Kane and I think the typical of the Spurs striker is very suitable for the style of play at United. If you succeed in getting Kane, the Red Devils will be better prepared to challenge the title from Manchester City. But of course it is not enough for Ten Hag if only Kane is recruited, but he also has to strengthen the back line that also does not yet look completely tough.
However, even though Kane hasn't decided on his future, I hope he will continue to have a career at EPL and it seems that Manchester United is a team that is worthy of considering.