I thought he would end up at Madrid. I think a lot of people felt that Kane would not see much prestige in winning the Bundesliga (and tbf, when asked about his goals for the season he mostly talked about the CL). I remember a comment that got a lot of upvotes when Kane was announced went something like “winning the Bundesliga as your first trophy is like losing your virginity to a prostitute”.
He regularly makes the bench for the most stacked national football team in the world (France). He’s still only 23 years-old. He was at Barca during the Barto-era and was very young, even at the time a lot of people felt he wasn’t ready for Barca.