The Whites failed with efforts to land Cody Gakpo from PSV Eindhoven and Hwang Hee-Chan from Wolves earlier today but then turned their attention towards Marseille man Bamba Dieng.
But despite agreeing on a fee with Marseille, the player ultimately decided to accept a late offer from Nice, snubbing the Whites.
Leeds, who are dealing with injuries to their senior striker options, now have around three hours left to bring a new attacker to Elland Road.
It has been claimed that Leeds have identified Swansea hitman Piroe as a potential deadline day signing.
However, contrary to claims, the Dutchman is not a player that is under consideration at Elland Road at present.
It remains to be seen whether Leeds will push for a striker in the coming hours or end the window without bolstering that position.
While they are yet to bring in a new attacker today, Leeds are set to lose one in the shape of Daniel James, who is closing in on a loan move to Fulham.
