SUNDERLAND LAUNCH TYSON WRIT
Nunez signed for Sunderland in March 2000, but has only managed 44 minutes of first-team football, and there are allegations that the wool was deliberately pulled over the Premiership side's eyes.
Sunderland are understood to have thought that they were buying a player from top Uruguayan side FC Nacional Montevideo, whereas Nunez came from Third Division Uruguay Montevideo.
The £1.1 million fee, as well as a £350,000 secondary payment, have left Sunderland out-of-pocket after they decided to cut their losses and release the player back to his former club on a free transfer.
However, the club have now reportedly offered a writ for £1.5 million as they hope to convince the courts that they were deliberately duped.
Meanwhile Black Cats manager Peter Reid has denied that he is set to make a move for Coventry City striker John Hartson.
"I've seen the speculation but I won't be making a bid," said Reid.