The experienced shot-stopper currently plays for ADO Den Haag in the Dutch Jupiler League, having joined the club in 2006.
But Postma now seems poised for a return to English football to join the revolution taking place at Loftus Road.
"This is an enormous chance for me," Postma told De Telegraaf.
"I am extremely happy that I can start keeping clean sheets in goal in England again."
QPR are expected to pay a nominal fee for the 31-year-old, who is due to sign an 18-month contract in West London.