Sunderland are understood to have given Spanish club Real Zaragoza permission to speak to Paulo da Silva.
Paraguay international exploring Zaragoza option
Sunderland are understood to have given Spanish club Real Zaragoza permission to speak to Paulo da Silva.
The Paraguay international has failed to settle on Wearside and has struggled to make an imprint on Steve Bruce's team.
This is in stark contrast to his standing at international level where he played an integral part in helping his country reach the quarter-finals of the World Cup last year.
Bruce has a plethora of defensive options having recruited Michael Turner, Titus Bramble and Nedum Onuoha on-loan, which has further limited Da Silva's opportunities.
Da Silva has made just one appearance this season having played 21 times in his first campaign following his move from Mexican side Toluca.
Meanwhile, the Black Cats are making progress in their bids to sign both Stephane Sessegnon and Sulley Muntari.
