The Insolvency Service is set to start seeking out other potential buyers for British Steel, including the plant in Scunthorpe.
It comes as two months of exclusive talks with the Turkish company Ataer Holdings comes to an end tomorrow.
Some 5,000 jobs are directly at risk in Scunthorpe along another 20,000 in the supply chain.
The official receiver says the company, which is controlled by the Turkish military pension fund and first expressed an interest in saving the business in August, is still "very much interested in acquiring the business."
But they now say discussions with other interested parties can now take place.
I think that's got to be the top priority to find someone to do that- there could be other players out there and we've got to redouble efforts to bring those to the table."