They’ll be serious title contenders next season - Conte is a default winner and doesn’t need top class players in every position to succeed, so they’re probably only 4 decent signings away from competing.
Kane would have been perfect for us; as you point out he’s far more adept at bringing others into play and operating as a false 9 than Haaland. But he’s at the club he made his name at, who’ve now got one of the best coaches in the world, the best stadium/training ground in Europe and overall probably the best equipped club to really challenge us over the next couple of years - especially if Conte can secure the Champions League revenue going into this summer.