The pair of strikers have endorsed a reporting fractured relationship since Nammar signed for a world-record fee of £ 200 million in August 2017.
Signals of friction between the two were especially noticeable in January, when Neymar denied cavalry of usurping him to punish-taking duties, despite knowing his team-mate was one of the goals to become the club's all-time top goalcoder.
PSG is 7-0 up at the time, but Neimar refused to give cavali the ball, instead slotting home his fourth game.
The microscope on the couple's relationship has been magnified since then, and things have come to a head once again when Neimar's Brazil and Cavani's Uruguay faced each other in the recent international break.
The match, held in Arsenal's Emigration Stadium, ended in a 1-0 win for Brazil thanks to really a Neimar penalty.
With the game Drawing to a Close and Uruguay chasing an equalizer, Cavani risky causing injury with a reckless tackle in Neymar.
The Uruguayan tripped Neimar and took him to the floor, before being furiously fuddled to him.
The 31-year-old then looked at some choice-looking words to Neymar, picking him up from the floor aggressively.
The incident commonly fueled speculation that the duo were in war, but Cavani denied the claims.
"You need to do this," he told LP.
"There you, the media, that are creating something of nothing.
"On the outset, each has his own life, on the inside, each job for the best interests of the club."
Neimar suffered a disaster in Brazil's further international game against Cameroon, while fellow PGG Star Kylian Mbappe suffered a blow.
About the news, Cavani said: "I hope it's not serious.
"We want everyone to wear."