Liverpool could make a move for Benfica defender Luisao after the Brazilian helped knock them out of this season's UEFA Champions League.
The Reds have held a long-term interest in the giant defender and even tried to sign him last summer.
Luisao impressed in the two recent meetings against Liverpool, even scoring the winning goal in the first leg encounter in Lisbon last month.
His performances have not gone unnoticed and Liverpool chief executive Rick Parry has hinted they could rekindle their interest in the South American.
"He [Luisao] is an excellent and interesting player, but now there are no problems in the central defence after the signings of [Gabriel] Paletta and [Daniel] Agger," Parry told O Jogo.
"Liverpool is a professional club and we will always speak with the clubs if we are interested in their players. And Benfica is a club we respect."
Parry also refused to rule out a move for long-term transfer target Simao after being frustrated in their previous attempts to sign the Portuguese international.
Liverpool saw moves for the former Barcelona ace fall through last summer and in January and Simao came back to haunt The Reds when he scored the opener in Wednesday's 2-0 win at Anfield.
The irony of the goal was not lost on Parry and he hinted Liverpool may make another attempt to lure Simao to Anfield in the summer.
"The goal was ironic for us because the player was close to signing for us and now he knocked us out with his goal," added Parry.
"It is not discarded to speak with Benfica at the end of the season."