Wilczek finished last season as top-scorer in Poland's top-flight, the Ekstraklasa, with Piast Gliwice after grabbing 20 goals for the mid-table outfit.
His contract is due to expire next month and he has already decided to leave on a Bosman free transfer, and a host of clubs from around Europe are now keen on landing him.
Sides from Italy, Spain and Germany have all made contact, but HITC Sport understands the player is keen on moving to the UK. Newly-promoted Premier League duo Bournemouth and Watford are keeping close tabs on the situation, along with Middlesbrough, Bolton and relegated Hull City - but it is QPR who are in pole position.
QPR - who could still face sanctions over their breaking of Financial Fair Play rules the last time they were in the Football League - are pushing hard to get a deal done quickly.
27-year-old Wilczek, who has recently been called into the national squad, is believed to be ready to drop into the Championship, as long as it is to one of the promotion contenders.