United are thought to be close to a deal with the Dutchman, who is currently preparing Holland for the World Cup in Brazil, but look likely to wait a few more days before unveiling van Gaal as David Moyes' successor.
Ed Woodward, United's executive vice-chairman, could shed some light on the managerial situation this afternoon when he addresses Wall Street analysts following the publication of the club's quarterly financial figures.
Ryan Giggs, who took charge temporarily following Moyes' sacking after just 10 months in charge, held 'positive' talks with van Gaal in Holland on Wednesday to discuss his role in the new Old Trafford set-up.
The Welshman is expected to be offered a coaching role, but it remains to be seen whether he will extend his playing career.
Swansea goalkeeper Michel Vorm, a member of the Netherlands squad, believes his national boss could have a successful spell in England.
"I think he's a coach who has a lot of experience obviously and the type of manager that treats everybody the same," he told Sky Sports News.
"He's very direct, he knows what he wants, so I think it's a good coach who really will suit Manchester United.
"He showed in the previous clubs he worked with, he did really well and I think he will do the same with Manchester United.
"He loves his job, he's not afraid to show it, but everything is in discipline and a lot of thought about it. He knows what he wants, he will show it."
But the 62-year-old has already made it clear he would love the chance to succeed Moyes, and a deal is now expected to be confirmed next week.
Van Gaal has won the league with all four of his clubs - AZ Alkmaar, Ajax, Barcelona and Bayern Munich - and also won the Champions League and UEFA Cup during his time with Ajax.