Raheem Sterling, according to Antony Kastrinakis of the Sun (h/t Jamie Anderson of the Daily Star).
Kastrinakis's original article suggests the Spanish giants will "open talks" with Liverpool in the next two weeks, while Anderson confirmed the two clubs will speak when the Reds head to the Bernabeu for an arranged friendly on June 14.
"It's believed the Reds are more willing to sell Sterling to Spain rather than a Premier League rival," wrote Anderson, who believes a deal including a "reduced up-front fee" and "considerable add-ons" could see Los Blancos secure the want-away Englishman.