The Uruguay striker left the pitch on the stroke of half-time holding his thigh, just after opening the scoring with a penalty in the 43rd minute.
The Uruguay worldwide was one of few PSG stars to start the match, as Tuchel kept the likes of Leandro Paredes and Kylian Mbappe in reserve ahead of the last-16 first leg at Old Trafford.
The omission of Cavani and Neymar from PSG's squad would serve as a major boost to United's chances of progressing past the French champions.
Coach Thomas Tuchel will be concerned whether Cavani, who clutched his right leg before going off, will be fit for Tuesday's trip to Old Trafford in the first leg of the last 16. "Without Ney [Neymar], maybe without Marco, maybe without Edi [Cavani], now we need a plan D".
Prince Philip gives up driver's licence
Both women were treated at the Queen Elizabeth Hospital in King's Lynn and were discharged later that night. Prince Philip has given up his driving licence after a crash near the Sandringham Estate.
'I honestly don't know if Cavani will play.
"It's super hard. If we miss several players the challenge will be even bigger". "We have to wait". Thomas Tuchel confirmed at the post-match presser that there was indeed a muscle tear, but then we await the seriousness of the injury.
"If he comes off, obviously I am anxious".
"I think we need to improve in terms of the mentality, the attitude and the spirit of sacrifice for the team", he told reporters.
Verratti played for an hour on Saturday after three weeks out with an ankle injury, and Tuchel admitted he might have to risk the Italian due to their injury problems.