Former Chelsea boss Jose Mourinho was attacked by a crazed fan who tried to stab him as he signed autographs.
The Real Madrid manager's personal bodyguard was wounded as the madman lashed out with the sharp object.
Mourinho (48) was rushed away by his security team at the A Coruna airport, in north west Spain, after the attack.
He was reported to be very "worried" by the incident.
Spanish media said the security guard, called Eduardo, only realised he had been stabbed when he boarded the team bus with the Real Madrid coach.
He thought he had been punched until he saw the blood pouring from the wound.
Real Madrid security chiefs believe the attacker meant to harm Mourinho as a crowd of 400 fans surrounded him as he stepped off a plane.
The bodyguard was treated by the club's medical staff for a 4cm wound.
"Mourinho stopped to sign autographs in arrivals, where a large number of Madrid fans were waiting for the team," one Spanish newspaper reported.
"The bodyguard was near the manager and noticed he had been stabbed in the armpit.
"The security guard realised he had a 4cm wound caused by a sharp object. Mourinho was very worried by the incident."
The news of last week's stabbing was revealed by respected Spanish journalist Jose Ramon de la Morena on the country's most popular sports radio show on Cadena Ser.
Security cameras recorded the drama and the attacker, said to be a tall man, has been identified.
In 2003, Mourinho said he suffered "weeks of terror" after receiving death threats ahead of the Champions League final.
The coach said he hired private security to protect himself and his family following the final. He coached Porto in a 3-0 victory over Monaco in Gelsenkirchen in May 2003.
Mourinho said he fled the ground immediately after the final in fear of his life.
In February last year, Mourinho was advised to tighten security after police smashed a plot by mobsters to raid his luxury lakeside villa in Italy.
Police said a gang of Italian criminals had been following him and may have been planning to kidnap him.
Four men were held -- Nikollovska Mirjana (46), from Genoa, and Bruno Bentivo-glio (44), Zoran Bentivoglio (20) and Luca Radosavljevic (30), all from Milan.
In 2009 he received death threats from Muslim radicals after he blamed Inter player Sulley Muntari's loss of form on his fasting during Ramadan.