A Red Devils supporter was stabbed in the chest while travelling back to Paris city centre following United’s 3-1 win over PSG at the Parc des Princes on Wednesday evening in Pais, report Sky News.
The Manchester United fan reportedly underwent emergency surgery.
The taxi driver allegedly took offence to the 44-year-old and three other fans singing in celebration at the victory.
Sky Sports News have been told that the driver pulled over to get them out of his taxi, before pulling a knife on the female passenger with the group.
The victim then reportedly tried to intervene before the driver turned the ‘large blade’ on him.
He was allegedly left on the pavement fighting for his life when another of the group flagged down a passing car to rush him to hospital.
The United fan underwent surgery on Thursday afternoon to remove blood from his lung, according to the report.
“We are in touch with the French authorities following an incident involving a British man in Paris on 6 March and stand ready to offer assistance if required,” the Foreign Office said in a statement.
A suspect has apparently been arrested, although the weapon is yet to be found.
United staged a famous comeback in the French capital as they overturned a 2-0 first-leg deficit to progress.
Romelu Lukaku scored twice and Marcus Rashford netted a last-gasp penalty after a controversial VAR handball decision.