Blackburn demand "acceptable figure" from Aston Villa for Stephen Warnock
"We are obviously sat in a very delicate position at the moment.
"Obviously what happens in the next few days will go on what negotiations go on between John Williams and Aston Villa."
Allardyce would not reveal whether Warnock had actually asked to leave but he has accepted that it is likely to happen before the end of the transfer window.
"I think it is obvious he would like to move to a club of that size without me trying to cover it up," he said.
"The problem is we want the value we think Stephen is worth and that is the most important thing from my and this club's point of view.
"I don't think the value is beyond reasonable. If Aston Villa get to where we are going it looks like we might have to lose him.
"I don't want to but as much as I want to keep him it doesn't look like that is going to be the case."
