In my humble opinion, it would be much better for Bayern Munich if Sadio Mane and Harry Kane formed an attacking link, but if there is a question of choosing between these two players, then I think Kane would be a much better option. But I still think that the management of Bayern Munich should still give a chance to prove themselves this season.
Harry Kane and Sadio Mané would form a good pair, only that we should expect arguments between them. Sadio Mané was a fantastic player at Liverpool, even at Allianz Arena, but everything changed when he was injured; he could barely engage in activities, and returning to peak form was unsolvable otherwise. The Bayern board has no intention of retaining Sadio Mane at the club; they wish to sell the Senegal international, most likely next season, because he is extremely violent and has been involved in multiple physical fights with his teammates, including injuring Leroy Sané.