This story has been reproduced from today's media. It does not necessarily represent the position of Liverpool Football Club.
Manchester United, Chelsea, Liverpool and Arsenal have been handed a transfer boost after learning contract talks between Porto and their star striker Jackson Martinez have stalled.
Sources in Portugal claim that although talks have begun to keep the striker at the Estadio do Dragao, Martinez remains tentative to sign.
The 27-year-old is holding out for increased wages that compensate for Porto's desire to include an astronomical buy-out clause in his contract.A buy-out clause of £70m is a possibility and would significantly harm Martinez's chances of leaving the team in the next five-years.
His current £35m release clause is seen as reasonable, and given his outstanding goalscoring record of 46 goals in 60 league games, it is understandable why.
The forward has endured a mixed season with the Portuguese club, an impressive goal tally has been soured by their inability to secure an automatic Champions League spot.
And despite netting 20 goals and Porto boss Luis Castro may decide that cashing in on his most prized asset would constitute better business.