"But we have to wait for the doctor's opinion to see if it's possible or not".
"I don't have good news".
But while Buffon believes the sides are on level pegging heading into the clash, things could have been different if PSG hadn't lost Neymar to injury, while Cavani is also a doubt after picking up a knock against Bordeaux.
Tuchel could not confirm whether either man would be fit to face United, but admitted Cavani's injury did not look good.
"He played 60 minutes, I don't know if it's possible for him to play again at Old Trafford against Manchester United only three days later".
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.More news: Matt Whitaker to Eric Swalwell: 'I am not your puppet'
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The Uruguayan netted a penalty to put PSG 1-0 up against Bordeaux before appearing to tweak his thigh after the spot-kick. We have to analyse Manchester United, we have to stay calm and confident.
Asked if today's win was ideal preparation for facing PSG, he said: "Yes, I would have to say so because it's a tough place to come". Thomas Tuchel confirmed at the post-match presser that there was indeed a muscle tear, but then we await the seriousness of the injury.
"On Tuesday, a very important game is waiting for us".
"I think we need to improve in terms of the mentality, the attitude and the spirit of sacrifice for the team", he told reporters.
TUKO.co.ke recalls that Paris Saint-Germain have made Chelsea midfielder N'golo Kante top priority signing this summer.