I was reading your message again: you are saying that Donnarumma for sure is in the list on the 5 best goalkeepers in the world, and we all agree with that, but who are the other 4? Because if on your opinion Donnarumma has only a few years left as a world-class goalkeeper I expect to see other goalkeepers around the same age of Donnarumma, correct? Could you please name the other 4 goalkeepers?
Thibaut Courtois could be one of those even if the age is not exactly in the same range. I also really like Ederson who is a high level player and also Mike Maignan should not be underestimated, he is an excellent goalkeeper and not because he plays for Milan is he less strong than the others.