Messias gradually climbed through the divisions before making his Serie A debut with Crotone last season.

He scored nine goals despite the club being relegated, and that earned him a loan move to Milan.

Now, with legendary striker Zlatan Ibrahimovic watching on, he has got off the mark in his third appearance for the former European champions.

"I dedicate it to my family and friends in Brazil," he said. "But especially to those who have believed in me and who had the faith to bring me to Milan.

"I have had a different path to others, so I dedicate this goal to them."

The forward, who only made his professional debut three years ago, has struggled with injuries since arriving at San Siro but his winner in Madrid leaves Milan third in Group B, one point behind Porto.

They play already qualified Liverpool in their final group game, knowing a victory will see them reach the last 16 if Porto and Atletico draw.

"This is the most important thing that has happened to me so far," he said.

"But humility has to be a constant. You can't beat yourself up about criticism or get over-excited about compliments. You need to have the right balance."

Milan coach Stefano Pioli added: "It is a wonderful story, but I think he is only getting started. He has great qualities, and this goal will give him even more belief."