A Ticketus spokesman said: "Ticketus is no longer able to play a role in the [blue Knights] consortium's bid for The Rangers Football Club plc at this stage.
"Ticketus first and foremost has a duty to its investors to protect the investment that it currently has in the club. Our willingness to work with all interested bidders, and to try and be part of a solution for the club, was undertaken with the objective to agree terms that would satisfy both our investors' needs as well as being in the interests of the club, its fans and its creditors.
"Regrettably over the course of this week it became impossible to reconcile these interests with the proposals put forward by the Blue Knights as the terms of a deal became clearer.
"We do not wish to attach any blame to the failure of these talks as, while there have been frustrations on all sides at times, we believe all parties have been acting in good faith to agree terms.
"Paul Murray and the Blue Knights have the interests of the club at heart and we wish them well as they continue to try to secure the best outcome for the club and its fans. We hope that a swift resolution can be found for the club that will enable it to continue to play a leading role in Scottish football."