
I don't know if this counts as "threatening to sue" or "offering not to sue," but Phil Reese, public relations manager for Jenn Sterger, said on the Dan Patrick Show that he and his client would pursue no legal action against the NFL as long as Brett Favre(notes) gets suspended.
link: http://sports.yahoo.com/nfl/blog/sh...-as-long-as-Brett-Favre-is-sus?urn=nfl-293917