Reports from the Netherlands have suggested the Magpies have seen struck a deal with the player and the club.
The 24-year-old is set to return from World Cup duty in Brazil, and many bookies have stopped taken bets on his move to St James' Park.
Mike Ashley's recruitment team had identified a series of alternatives with Manchester City's Micah Richards and Ivory Coast international Serge Aurier among their potential targets.
But the Dutchman will end up at Newcastle.