Club Brugge chief Vincent Mannaert is backing Charles de Ketelaere for big things at AC Milan.
Mannaert oversaw the summer sale of De Ketelaere to Milan.
He told La Gazzetta dello Sport: "For me he is a very strong player, he can become a top of a top team.
"He has to put on a few pounds of muscle, that's the main challenge. He has an advantage: a great ability to adapt quickly. If the coach explains one thing to him, he immediately brings it onto the pitch.
"Charles knows what to expect and in the games with more pressure he has always done well. In his debut in the Champions League against PSG he seemed to have been there for two years."