Newell's Old Boys have confirmed the signing of Sunderland striker Ignacio Scocco.
Edinson Cavani says he is settled at PSG but admits anything could happen amid reported interest from Manchester United.
The Spanish club, also owned by Watford supremos the Pozzo family, confirmed on their website that Iriney has agreed a season-long deal at Vicarage Road.
The 32-year-old has spent more than 10 years in Spain and also played for Rayo Vallecano, Celta Vigo, Real Betis and Almeria.
Watford caused controversy last season by bringing in a host of loanees from Granada and the other Pozzo-owned club, Udinese.