Antony has 31 goals and 27 assists in 134 club appearances for Ajax and Sao Paulo, and two goals and two assists in nine senior appearances for his native Brazil. He has won two Eredivisie titles, and a gold medal in the 2020 Summer Olympics.
“This is an incredible moment in my career to be joining one of the most iconic clubs in the world. I’m thankful to everyone who has believed in me, especially my family, and all my coaches and team-mates, because I could not have got here without them.
“Playing under Erik ten Hag at Ajax was perfect for me and my development. His style of football and coaching brings out the best in me, and I am excited by what he has told me about his plans and ambitions in Manchester.
John Murtough, Manchester United Football Director, said:
“Antony is one of the most exciting young talents in European football and has exactly the right profile for the attacking, dynamic team Erik is building.
“We have been especially impressed by his desire to join Manchester United, and to be part of a long-term project to get the club back to the levels of performance we all expect.”