Manchester United are expect to fully confirm the signing of James next week when the global transfer window opens.
Although, Manchester united have not revealed the official amount of the transfer, but it is reported to be near £15 million as reported earlier.
The Welshman's move will be confirmed when FIFA's global transfer window opens next week.
"Daniel has successfully completed a medical at the Aon Training Complex", said a statement from Manchester United.
He came within a whisker of joining earlier this year, and his impact might just have helped them back into the Premier League.
It is understood the 21-year-old has signed a five-year contract with the Old Trafford giants and has become Ole Gunnar Solskjaer's first addition since his arrival as manager in December 2018.
A dazzling Welsh winger impressing for Manchester United?
James being on the verge of a move to Manchester United will surely be hard to stomach for Leeds fans.
The former United striker has focused his attention on young British players in a bid to revamp his side and he believes James will be ready to step up to the Premier League.