The 22-year-old Dutch international has been heavily linked with a move away from the Eredivisie, with AC Milan also credited with an interest in signing him in January.
However, the player's agent, Chiel Dekker, has consistently denied suggestions that his client is seeking a move away from his native Holland, but hinted that a transfer could be possible at the end of 2012/13.
"My client could leave in January? Absolutely not. There's nothing in that," he told Calciomercato in Italy. "We are only in October - the only thing I can say is to call me back in May."
Manchester United's lack of a sturdy midfield presence has been well-documented in the past few seasons, hence Ferguson's reason for scouting the PSV star, as he continues his search for a long-term replacement for club veteran Paul Scholes.