European rivals are monitoring Thiago Silva's situation at PSG.
Talks over a new deal have stalled, reports UOL Esporte, which has alerted major clubs across Europe.
Thiago Silva has been linked with a return AC Milan, however, his availability also brings Premier League clubs into the reckoning.
Chelsea, Liverpool and Manchester United are all in the market for an experienced centre-half and the Brazilian fits the bill.
Barcelona will also monitoring developments as PSG battle to secure their captain to a new agreement.