Luiz caused controversy this week when he responded to one fan on social media who complained about the lack of games he played this season.
The midfielder of Brazil defended his record and questioned how he was treated by former coach Thiago Motta, along with the injuries he sustained this period.
Now Juventus is considering taking action, says La Gazzetta Dello Sport.
The eruption can lead to disciplinary consequences for the Brazilian, including a heavy fine for violating the ethical code of the club.
Luiz stated this week: “I did not come here to take pictures; nobody else did it. I want things to be different. I came up with a goal, I listened to my heart when I signed. Now I want you to answer me: why has a signature played with this shirt with this shirt?
“You can later say what you want in the press:” Douglas is not fit. ” Am I not fit?
“I had come from one of the best seasons of my career, one of the best defensive midfielders in the Premier League. Injury stopped me. True.
“But how long did I stay on the couch while I was fit? Many. These injuries were not normal. I have never been an injury sensitive, but there are many reasons that I would have been able to comment on. I will continue to give everything for this club, although it is sometimes difficult. It is not easy, but you can count on me.”