Pumas fly-half Nicolás Sánchez is the latest player to sign with the Argentina Rugby Union ahead of their entry into Super Rugby next year.
The 26-year-old former Bordeaux Begles and Toulon playmaker has signed a three-year contract starting on January 1 and making him available until the end of 2018.
The deal was sealed at Sánchez's current club, Tucuman Lawn Tennis Club, which is celebrating it's centenary year.
Sánchez joins fellow Pumas Joaquín Tuculet and Agustín Creevy in committing to their national union despite having enjoyed successful and lucrative stints in Europe.
"I do not know if the word is relief, but you feel something like that after signing. It is a mixture of feelings," said Sánchez.
"The truth is that I take what is coming with great responsibility and I look forward to it.
"There was a moment, when I was playing in Toulon at a good level and had the chance to stay there, that it crossed my mind to stay in Europe.
"But I could not get out of my head that meant not playing for Los Pumas. For me that was significant."