But a statement on the club's website insisted: "Contrary to reports elsewhere, the deal to complete Javier Mascherano's permanent move to Liverpool has yet to be finalised."
It is understood terms have been agreed on a four-year deal, which is expected to be ratified next week.
The deal is expected to come into force in June, when the loan deal for the player expires.
Liverpool do not have to pay for the Argentinian player immediately because the Anfield club already hold his registration.
