Lose a tax deduction for donated property?

[Stephen R.]

I'm looking to pick up a property that was donated to a charity. (Actually to be more specific it seems it was quitclaimed for $10) I'm being told that the charity will not agree to my offer price because they are concerned that the donor will lose their tax deduction if they do. I've been searching the IRS publications but can't seem to find an answer as to when and how that would happen.