The 23-year-old France defender has shared defensive duties with Thiago Silva and Alex this season, starting 18 of 29 league games, and fears for his international future in the run-up to next year's World Cup.
Sakho has reportedly been tracked by Liverpool as a potential replacement for Jamie Carragher, while Arsenal and Newcastle are also understood to be interested.
"In the mind of the PSG coach, I'm the third (in the pecking order of central defenders)," Sakho, who is under contract at Parc des Princes until the
summer of 2014, told L'Equipe.
"I finally come to accept it even if I do not understand it.
"I have to play at club level to qualify for the France team. Next season will be important.
"It's been a difficult year and a half for me at PSG. To continue my progress, I must be playing."