|Edinson Cavani has scored 21 goals in 25 games for PSG this|
Edinson Cavani might miss the first leg of Paris St-Germain's Champions League last-16 tie with Manchester United.
The 31-year-old injured a tendon in his hip after scoring a penalty in Saturday's 1-0 win over Bordeaux.
Fellow forward Neymar has been ruled out of Tuesday's 1st leg and the return game on 6 March through injury.
In a statement, PSG said the length of Cavani's unavailability "will depend on the evolution of the injury over the coming days".
Speaking on French tv on Sunday, manager Thomas Tuchel said: "There isn't any good news for Edi this morning."
He added: "There are still examinations today at our training centre, the club will speak a little later, but in my opinion the news isn't going to be very good. it'll be very difficult for him to play.
"There is a very small hope. we always hope but the first exams are not good."
Brazilian forward Neymar suffered a broken metatarsal in a 2-0 French Cup victory over Strasbourg on Wed, 23 Jan and was ruled out for 10 weeks.
This leaves World Cup-winning forward Kylian Mbappe - who replaced Cavani at the weekend - as the only fit member of their first-choice front 3.