Diego Llorente has ed Leeds from Real Sociedad for 20 million euros.
Meanwhile, Real Madrid will earn just over four million euros from the transfer, as they were entitled to 30 percent of the profit made on any future sale when they sold him to the Basques back in 2017 for six million euros.
Real Sociedad are now in search for his replacement with Mario Hermoso and Leandro Cabrera being the main options.
Coach Imanol Alguacil now has just three centre-backs at his disposal in Aritz Elustondo, Robin Le Normand and Modio Sagnan.
MARCA already reported on July 26 that Cabrera was Real Sociedad's primary target with Hermoso also being an option.
Everything indicates that Real Sociedad will try to sign a replacement as soon as possible.