Leo Duarte is set to join Serie A side AC Milan after Flamengo head coach Jorge Jesus confirmed "it's all done".
Flamengo defender Duarte has been linked to Milan and Italian rivals Roma in recent weeks after impressing for the Brazilian club.
AC Milan looked to have won the race with reports they are poised to complete a €11 million (£9.9m/$12.2m) deal for Duarte on a five-year contract.
"I'm sure Duarte will become a Milan player, it's all done," Jesus told Radio Brasil following Sunday's 3-2 win over Botafogo.
"He's preparing for his move to Europe. I wish him all the best."
Duarte has made almost 100 appearances for Flamengo since making his debut in 2016, with the 23-year-old centre-back scoring two goals.
He is set to become the latest player to swap Flamengo for Milan following Lucas Paqueta's €35m (£31.5m/$39m) transfer in January.
It has been a busy off-season for Milan as they look to bounce back from a disappointing 2018-19 season in which the club finished fifth in Serie A, missing out on a place in the Champions League.
It started with the appointment of Sampdoria boss Marco Giampaolo as head coach after Gennaro Gattuso's departure in May.
Milan legends Paolo Maldini and Zvonimir Boban were then given key backroom roles at San Siro.
Former Rossoneri captain Maldini was appointed technical director while Boban, who won four Serie A titles and the Champions League during his spell at Milan, is now their chief football officer.
On the transfer front, Milan have signed defender Theo Hernandez from Real Madrid and midfielder Rade Krunic from Empoli, while the likes of Ignazio Abate, Cristian Zapata and Riccardo Montolivo all departed at the end of their contracts.
Milan are expected to bring in another forward with Patrick Cutrone reportedly on the verge of joining Wolves.
The club are close to signing Lille forward Rafael Leao and Atletico Madrid's Angel Correa.
Former Chelsea midfielder Oscar also revealed earlier this month that he had spoken to Milan and city rivals Inter over a possible move to Serie A from Chinese Super League side Shanghai SIPG.