Matuidi ended a six-year stay at Parc des Princes when he joined the Serie A champions for an initial €20 million in August, just over two weeks after PSG smashed the world transfer record to sign Neymar from Barcelona.
"Without going into details, I had a discussion with Neymar," the 30-year-old told L'Equipe. "I talked a lot with Dani Alves too, with Thiago Motta.
"In short, they all wanted me to stay, because, beyond my qualities, I spent six years in Paris and I know this club very well.
"But my choice was made and I would have been frustrated at the end of my career not to try to play abroad. And what an experience, it is beautiful."
Maurizio Sarri's men lead by four points, although Juve's postponed match against Atalanta last weekend gives them a game in hand.