I agree that Kane would have been a good transfer for Manchester United, but they have Bayern competing with them for that striker and I think Bayern would not shy away from raising their offer if they need to. It is said that Kane already gave his word to Bayern, but who knows if that is true. It is complicated to make a prediction about how Manchester United will do in the next season and when Kane wants nothing more but titles, I think that Bayern would be the better choice for him. What are the chances that Manchester United wins a title next season? The chances are probably low. They might have a chance to win the FA Cup, but I doubt that they are strong enough win the Champions League or the Premier League.
I feel it would have been easier for Manchester United to sign Kane than Bayern Munich. It's going to be a very difficult thing for a non English team to sign the captain of the England squad. The major obstacle to Manchester United is that Tottenham don't seem like people that are ready to sell Kane to rivals. I'm not even sure they're ready to sell Kane at all, but they will be forced to because they may lose him for nothing next summer. Why lose both the money and the player when they can get a hundred million from him now.
In terms of trophies, Bayern is the best choice for Kane. They have a chance in the champions league and an even bigger chance in the league, unlike Manchester United that have a very little chance of winning the Champions league or league.
But with Kane Manchester United that be a pretty strong team. Kane will fit Manchester United perfectly. Man United should do all they can to sign Kane.
I don't think that the language will be an issue here and German is not necessarily required here to play the best level in Bayern Munich. Tuchel was the coach at Chelsea and is well informed and experienced in how to instruct English speaking players and which terms to use to get his message across as good as possible. Language really is no barrier here. It is up to Kane whether he wants the change and the chance to win titles in his career finally and what Bayern Munich is willing to pay for him, but I think it will work out as Tottenham already said that they won't have him on the team for another year when he doesn't want to extend his contract. That is the ace up the sleeves for Kane because he can also say that he just stays as he has a contract, so Tottenham also has to try to approach the interested clubs and not just dictate any amount they want.