Liverpool have submitted a €45 million (£40m) bid to sign Sporting midfielder Bruno Fernandes.
Fernandes, who scored 29 goals and registered 17 assists, has already been heavily linked with Manchester United, Manchester City, Tottenham and Inter Milan.
The 24-year-old is expected to be one of the most in-demand players during the summer transfer window following his excellent performances for the Portuguese club this season.
But according to Correio da Manha, Liverpool are the first club to make a formal bid as they have submitted a €45m (£40m) offer.
Sporting CP, however, are hoping to receive a higher fee for the Portugal international, given the number of teams who have expressed an interest.
Fernandes has a €100m (£86m) buyout clause in his deal with Sporting but the midfielder is expected to leave for less than that figure.
Last month, reports claimed that Manchester City had made a €55m (£47.2m) bid for Fernandes.