The 32-year-old voiced his concerns about his former club's transfer dealings, before going on to reveal his unfavourable relationship with current boss Carlo Ancelotti
The right-back brought an end to five years in the French capital, after being released by Les Parisiens to join Brazilian side Cruzeiro.
The 32-year-old has criticised the Parisian outfit, insisting that they should be keeping their top scorer Nene, rather than selling him, with Corinthians reportedly interesting in signing the striker.
"For me, Nene should be untouchable! A player who has done many beautiful things at a club becomes a legend, right?" Ceara told reporters.
"It seems odd to me that PSG seeks to get rid of the best player the last two years. I wish he stays in Paris because I want the big players to remain.
"But Nene also has personal ambitions and if PSG offered him no future, he will leave."
Ceara also tore into the management, after being released by the Parisian outfit this summer, and revealed he had a poor relationship with Ancelotti.
"My dream was to play in the Champions League with my team, and finally, I leave at the wrong time. But we must accept it," he said.
"I have some bad memories with Ancelotti. When I returned to the Camp des Loges [PSG's training ground] to greet everyone, I shook his hand, but it was uncomfortable."
PSG encounter Barcelona in a pre-season friendly on Saturday. Kick-off for the match in Paris is at 19:45CET.
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