Amelia says Donnarumma is a "complete" goalkeeper.
He told TMW: "I think he's complete. We see a few mistakes a year, but (Gigi) Buffon and the other great goalkeepers also made those mistakes.
"He needs just one more thing: to increase his experience at European level, and I hope he does it with Milan. This gives him credibility on the outside and also awareness in his own means.
"He knows he is a great goalkeeper, and he also has a head on his shoulders. You can always improve, both at 20 and at 35, but he is very complete."