The sale of Rafa Camacho to Sporting Lisbon last summer included a 20% sell on clause and a buy back clause.
Rafa Camacho, 20, signed for Sporting Lisbon last summer for £7m and went on to play over 20 first team games and getting 1 assist.
However he has been left out of the first team squad for this season with Sporting Lisbon coach Ruben Amorim now looking to move Camacho on with a move back to England a possibility.
Portuguese outlet Record report that he is available for as little as 6 million euro, with 20% of that headed into the Anfield coffers.
The outlet also report that a return to Anfield may even be back on the cards with Liverpool taking advantage of their buy back clause.