The Brazilian signed the new deal until 2023.
Midfielder Andreas Pereira extended the agreement with the Red Devils, the Manchester United official website reports.
The Brazilian midfielder signed the four-year deal with the United, with the possibility of renewal for one more season.
Pereira joined Manchester United in January 2012 from the PSV Academy.
The 23-year-old scored 1 goal in 22 appearances for the Red Devils last season.
