Dont be stupid, do you know how old ronaldo is right now? by the time kane get to the age where he is much better and much deadlier striker then probably ronaldo will already retire. Playing with better player is actually a gift which means that you need to work your ass twice harder to make sure you get into the startng eleven
I don't understand people like you who think that Ronaldo is the best. From my point of view, many players are better than Ronaldo and if Kane works hard, he can quickly become better than Ronaldo.