James, sister of England and Chelsea right-back Reece, has already agreed personal terms and completed her medical.
Sportsmail understands the England international’s move was overseen by her father Nigel James, her agent Sam Stapleton and renowned sports lawyer Udo Onwere.
James joined United from Arsenal in 2017 aged just 16 and has been a regular goalscorer during her time in Manchester.
James has represented England at youth level and was called up to the senior team by former boss Phil Neville in last year - but she is still to make her senior debut.
Source : All football news