Brazilian midfielder Casemiro will reportedly not be allowed to leave Real Madrid in January.
The 21-year-old, who arrived from Sao Paulo in the summer, has struggled for first-team football with the Spanish champions this season.
However, according to reports in Spain, the long-term injury to Sami Khedira has ended Real Sociedad's hopes of signing the youngster on loan in the winter transfer window.
The Brazilian international initially joined Madrid on loan last season, before making the move permanent on June 10 of this year.
