The Uruguayan forward joined PSG from Napoli in 2013 and has gone on to become the Parisian club's all-time top scorer with 168 goals in 244 appearances.
The pair were broadcast having a verbal argument over who would take a penalty in the club's 2-0 win over Lyon earlier this season.
Speaking after PSG's 2-2 draw at Amiens Friday, Marquinhos said he was thrilled to welcome Neymar back.
Cavani recently opened up on that spat by saying: "It is true that there was a problem at that time with Neymar".
"He needs to be left alone to work with the physios, but we also want him to be with us for the last match". "The team's superiors have taken a decision and I have respected it".
But the Brazilian is said to be unhappy despite enjoying a stunning debut season in Ligue 1 scoring 28 goals before sustaining a foot injury.
"I am a footballing worker - I am not a star". I am a hard worker who looks to give everything.
And a reported miscalculation in revenue from various sponsorship deals has put the club in danger of failing to meet the requirements unless they balance the books with Di Maria potentially one of the players who is sacrificed.
Cavani also insisted that there is need for more unity at PSG, urging the squad to come together as "family" after what was a disastrous campaign in the Champions League.
"The supporters whistling, this was not good for him".