Benfica want to end speculation over Oscar Cardozo's future by securing the Liverpool target for another two years.
Brendan Rodgers has confirmed he will be active in the January transfer window and signing a striker is his priority.
He has scouted Cardozo this season and was weighing up a move for the 29-year-old, who has netted nine in 12 appearances so far.
Rodgers wants to take the goalscoring burden off Luis Suarez and believes the Benfica star could be a decent acquisition at Anfield.
The Portuguese club have other ideas, however. With the Paraguay striker's contract up in the summer, negotiations over a new deal have already begun.
A two-year deal is planned and Benfica hope to get their man to sign shortly.