Rafinha has been released by Paris Saint-Germain so that he can sign with Al Arabi SC of Qatar.
Prior to joining Real Sociedad on loan in December, the 29-year-old had lost favour at Parc des Princes, appearing just five times in all competitions the previous season.
Rafinha played more frequently for La Real, making 17 LaLiga appearances and contributing one goal to Sociedad's sixth-place finish.
On his return to the French city, however, the two-cap Brazil international fell further down the midfield pecking order as Christophe Galtier signed Renato Sanches, Vitinha, Carlos Soler, and Fabian Ruiz.
Rafinha left the two-year stint with the Ligue 1 champions and headed to Doha to join Al Arabi on a two-year deal in anticipation of the World Cup later in the year in Qatar.
With four victories and one loss through their first five games, Al Arabi are in first place in the Qatar Stars League.