MK Dons are struggling to assemble a pre-season schedule after four different sides cancelled friendlies with the side after pressure from fans.
QPR are the latest side to withdraw from a proposed friendly, with QPR chairman Gianni Paladini saying: "After several phonecalls and threats from our own supporters, I have decided not to go ahead with the game."
QPR join Colchester, Ipswich, and non-league Histon in cancelling games with Histon chairman Gareth Baldwin adding: "Sometimes ethics and principles have to come before making money.", and a statement from Colchester reading: "It would be an unwise PR move for Colchester United to proceed with our fixture."
Currently only one League side, Notts Forest, is scheduled to meet MK Dons in a friendly match.