Real Madrid legend Alfredo Di Stefano was re-admitted to hospital last night with heart problems.
Di Stefano, Madrid's honorary president, has a history of cardiological problems and suffered a heart attack five years ago.
The 84-year-old's condition is not thought to be too serious.
A statement on the Madrid website read: "Alfredo di Stefano has been re-admitted to Hospital Sanitas La Moraleja after suffering a low/moderate cardiorespiratory decompensation.
"The medical staff decided to keep him at the hospital for optimum monitoring, given his history of chronic pathology.
"Real Madrid's honorary president was admitted to hospital last week to have a complete medical check-up, during which he was diagnosed with a viral respiratory infection, and nine days later he was allowed to leave the centre and have outpatient treatment."
Di Stefano, who was twice voted European footballer of the year, scored 216 goals in 262 league games for Madrid in one of the most successful teams of all time, which lifted the European Cup five times in a row as well as eight league titles.