The attacking midfielder recently revealed that he would be open to a reunion with Jose Mourinho at Stamford Bridge after previously working with the Portuguese coach at Inter.
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"Sneijder to Chelsea is just a rumour at the moment," Van Gaal told Algemeen Dagblad, "but it would be much easier for me to keep an eye on his progress if he were to make the move to Chelsea.
"I could be at Chelsea within an hour from Netherlands and Mourinho is a friend of mine."
Sneijder was stripped of the Oranje captaincy by Van Gaal last season, with Manchester United star Robin van Persie taking the Galatasaray man's position, much to the disappointment of the 29-year-old.
However, Van Persie has stressed that there are no hard feelings between the two over Van Gaal's decision.
"I had a good talk about it with Wesley and he's dealing with the situation pretty well," the United striker declared. "I have no doubt that everybody will help him."