Materazzi says Lautaro Martinez, Nicolo Barella and Alessandro Bastoni were key to the title triumph.
"Lautaro knows he cannot act as a father figure in the locker room, but he is the club captain," he told Sport Mediaset.
"Martinez also knows the weight he has in the locker room. He is the master of his own destiny. If he wants to be the king of Milan, he can already claim it.
"Lautaro, like Nicol Barella and Alessandro Bastoni, are guys who can walk around Milan with their heads held high and a crown on their heads."
Matrix continued: "I expect continuity, which is also demonstrated by those who have joined the club.
"We must avoid jealousy like what happened on the other side of Milan.
"The Nerazzurri must be a symbol of intelligence and competence."