The North East outfit released a statement on Monday evening announcing the club was up for sale.
Mike Ashley reportedly wants Newcastle sold by Christmas and already a host of names have been linked with potential takeover bids.
However, two of the investors mentioned have already ruled themselves out of contention, stating they have no interest in the club.
Yildiz Holding chairman Murat Ulker, who owns McVitie's biscuit brand, has already insisted rumours of his interest were wide of the mark.
In a statement, his business said: "The company is not purchasing Newcastle United Football Club and no discussions about the team have taken place.
"We wish them the best of luck in finding a new owner."
Just a few hours later, Inter Milan president Erick Thohir followed suit, saying: "In this moment I’m concentrating solely on Inter.
"There are no such law in Europe that states I’m able to own two clubs in the same part of the world.
"I’m also the President in another club, D.C. United out in the United States that is in Washington.”
However, Newcastle fans will still be dreaming a buyer comes forward to rid them of Ashley's tenure sooner rather than later.
A Chinese consortium has been heavily linked with the club and talk of such a move has not gone away, despite sceptical links over the summer.
Meanwhile, financier Amanda Staveley, who was spotted at Newcastle's 1-1 draw with Liverpool a few weeks ago, is still an option.
According to The Chronicle, Staveley has not signed a non-disclosure agreement with the club but fresh talks may take place soon.
WWE chairman Vince McMahon has also been linked with a sensational bid.
Although Ashley's previous attempts to offload United have been met with warranted scepticism from the Geordie faithful, his most recent statement is his biggest indication to date he wants out of St. James' Park.
The Sports Direct tycoon has revealed he would accept deferred payments from any potential buyer, in the hope of tempting interested parties.
