Cavani picked up the injury at the end of the first half and he limped off the pitch holding his right thigh shortly after scoring the only goal with a penalty.
Neymar is ruled out with a broken metatarsal and it looks as though PSG will be without their first choice striker Edinson Cavani too, after he was subbed off at half-time during Saturday's game against Bordeaux.
Paris Saint-Germain manager, Thomas Tuchel, has said he is "worried" over the injury Edinson Cavani sustained during their 1-0 win over Bordeaux in Ligue 1 on Saturday.
The Paris side are already with their injured Brazilian star Neymar for the tie so any potential lay-off for Cavani could deal their hopes of beating United a huge blow. My feeling is that it's going to be very hard for Ed to play, but we have to wait a little longer because he's taking exams now. Yes, it is worrying. "We don't have a second "Edi", Tuchel told Canal+, but he later insisted that he did have solutions in mind if needed. My feeling is that it will be very hard for him to play, ' said manager Thomas Tuchel after the tie.
And speaking after the game, Tuchel said: "If he [Cavani] comes off, obviously I am anxious".
"We will have to wait another night and day to have a clearer idea and get more tests done".
Marco Verratti is also a doubt, the midfielder managing only 59 minutes against Bordeaux after recovering from an ankle injury. He will hopefully play 45 minutes, but we have to decide. Without "Ney", maybe without Marco, maybe without "Edi". That match is just two days away, but it will be important to see if he is at training leading up to the game.
"Verratti can play and will play", said the German coach.