The Blades boss is set to open talks with the St Mary's Stadium club on Monday, but Mr. Warnock is convinced he has already snubbed the Blades for a move to Elland Road.
Steve [Wigley] told me that Ormerod was going to Leeds and I am very disappointed," Warnock told sufc.co.uk.
"Perhaps I should have talked to the player first but it's a lesson for me even at this stage of my career. Perhaps I shouldn't do things legally."