Barton says he met with Gerard Houllier to discuss a move to the Reds.
In his new book, No Nonsense, being serialised in the Liverpool Echo, Barton wrote: "Had things panned out differently, I could have made the obsessive debate about the mutual suitability of the Gerrard-Lampard axis redundant.
"I met with Gerard Houllier at Melwood, and agreed everything verbally.
"A deal was close to being concluded but then he was sacked that summer. It was never revived."