Manchester United completed the signing of Antony from Ajax on Thursday for a fee reported to be 95 million euros (£81.3m).
Reports revealed that the transfer fee includes a potential 5m euros of add-ons making him the fourth most expensive signing in Premier League history.
The 22-year-old Brazilian international forward has signed a contract until 2027, with the option of an additional year.
"This is an incredible moment in my career to be joining one of the most iconic clubs in the world," Antony said in a statement on Manchester United's website.
Antony reunited with his former Ajax manager, Erik ten Hag, and teammate, Lisandro Martinez.
The Brazilian becomes the club's fifth signing after Tyrell Malacia joined from Feyenoord, Christian Eriksen on a free transfer from Brentford, and Casemiro from Real Madrid.
Antony scored 25 goals in 82 club appearances for Ajax since joining, under Ten Hag's reign, from Sao Paolo in 2020. He also has two goals and two assists in nine senior appearances for Brazil.
He has won two Eredivisie titles, and a gold medal in the 2020 Summer Olympics.
Antony becomes United's third most expensive signing after Paul Pogba (£93.3m) and Romelu Lukaku (£90m).