Sadio Mane had a bad performance this season and especially in the last few weeks, I think he can't prove his skills there maybe because of not having enough focus in Bayern Munich since he joined this team. But he is also under pressure because they ask him to have better performance and that's why he can't have enough focus this is one reason for Mane to having fights with other players. Maybe he should move the Saudi teams for the next season.
It was his first season at Bayern Munich. I think he is still trusted by Tuchel next season to be able to improve his performance and make a big contribution to the Bayern Munich team. In the midst of issues that are circulating quite strongly on social media regarding the interest of the team from the Saudi Arabian League, there has been a lot of big speculation about his future. I think Sadio Mane still wants to play in Europe to reach the peak of his career before he decides to move to the Saudi Arabian league.
But all that can change quickly and all decisions may turn out to be good choices for his career. I think Bayern Munich should give time to Sadio Mane because we have seen the quality he has with Liverpool very well from his few seasons with Liverpool. Tuchel really wants to overhaul the squad to become stronger by getting rid of players who are considered to have failed to shine by buying other players in this transfer window.
Nobody wants a player in his team to fight with other players and I'm sure Tuchel know the risk of keeping Mane in his team also since they are trying to hire Kane for the next season, there is no need for them to pay salary, and keep a player like Sadio Mane in the team. I expect Bayern Munich to sell Mane.
The thing is, I do not think Bayern Munich actually have any big problems with money. So obviously they have the ability to get Harry Kane in the team. The problem is I think the amount of money that Tottenham is asking for him, is actually too much and they can get other player/players who are actually better and will provide more value in the long run. But the problem is those players probably do not have a resume like Harry Kane. But I think at this point, Bayern Munich only cares about good performance. At least they care about good performance and a lot more than they care about money in my opinion. So I believe they should spend.
Regards
Duke
Bayern Munich's finances are in shape; it's not even an issue for the Bavarians. They explore further away with the goal to sign Harry Kane. They may be capable of getting the Englishman over, but they are unwilling to spend such enormous earnings on an Englishman. Thomas Tuchel can continue without Harry Kane next season and will most likely sign another attacker. Bayern Munich is the Bundesliga's colossus; they're furious in terms of performance and capable of embarrassing average clubs, it's their duty and they're globally known for it.
They are always in shape and have a good financial situation. In fact, the main reason for Bayern Munich to achieve the title in Bundesliga is their good financial situation while I think this time they are just trying to spend less money to hire Kane, otherwise Bayern Munich has good enough funds to hire this player at any price.
Bayern Munich is getting crazy and they are really trying to hire Kane with any situation and condition, since Bayern Munich needs to pay too much money for Kane they are even trying to supply the money by selling the players they have in their team.
They can even sell Mane, Benjamin Pavard, Marcel Sabitzer, Bouna Sarr, and Alexander Nübel to earn money from selling these players to hire Harry Kane. I don't know if they really do that or not but seems Bayern Munich wants to Hire Kane at any price even if they sell some players for him.

Sell Sadio Mane and bring in Harry Kane is a controversial decision consider that the two names had shine in the Premier League.
I hope Bayern Munich can be more mature in his condition, there's no guarantee Harry Kane will perform as well as he did with Tottenham, in this case Sadio Mane can be their reference before decide to bring in Harry Kane, especially since the fee required will be much higher.
There is nothing controversial, because even if Mane becomes an option to exchange to get Kane I think it is valid. Or maybe, Bayern Munich sold Mane first to a club that plays in the Suadi Professional League and with the money obtained then Bayern Munich brought Kane, that is also valid if done. After all, their rivalry is limited to the match and does not extend to their regular lives. You can also see the example of Ramos and Messi who continue to play rough on the field, but in the end Ramos and Messi can play together at PSG last season. So yes, there is no problem whatsoever between Mane and Kane, they remain fine and there are no controversial decisions.
Isn't it too optimistic to think that selling Mane brings in a substantial amount of money that could be used to pay Kane? Mane won't be sold for nothing, but I doubt that there is any club currently considering to pay a significant amount to Bayern Munich as Mane also has an ongoing contract. If it is not Saudi Arabia, which club is willing to pay Mane a high salary? He is one of the best paid players and he could also choose to stay and accept the fight in the team while making a fortune even if he doesn't play. All these negotiations will be cumbersome and can take much longer.
Not just Sadio Mane but Bayern Munich can sell even more players to supply the money for hiring this player. I think since Tuchel joined Bayern Munich he didn't make some changes and now he can even sell some players he doesn't need for the next season this way there won't be any problems with hiring Harry Kane and paying the money to Tottenham.
However the Bayern Munich I know got enough money to even hire Kane without selling any player.