Pumas number eight Leonardo Senatore is the latest player to sign for Argentina's Super Rugby franchise ahead of the upcoming 2016 season.
The 31-year-old, who impressed during the recent Rugby World Cup, has put pen to paper on a two-year deal which runs until December 2017.
Senatore has played for Worcester in the Premiership in the past.
"Everything counted in my decision to return home, to play in such a tournament and be close to the family," he said.
"Super Rugby has an impressive dynamism that's hard to find in other tournaments… you can see great rugby in any match."