Manchester United are being linked with Real Madrid captain Sergio Ramos.
Marca says United are tracking the situation of Ramos.
The 34-year-old is out of contract at the Santiago Bernabeu at the end of the season and is said to be keeping his options open.
United among those keeping tabs on the situation, along with Paris Saint-Germain and Juventus.
Ramos infamously turned down United five years ago as he negotiated a new deal with Real president Florentino Perez.
