Emery replaced Laurent Blanc, who was sacked, and arrived with a strong reputation after guiding Sevilla to three straight Europa League titles.
But PSG finished second behind Monaco in Ligue 1 last season
and made unwanted history by becoming the first team in the history of the Champions League to be eliminated from the knockout stage after winning the first leg 4-0, losing 6-1 away to Barcelona in the last 16.
PSG failed to reach the quarter-finals again this season, beaten home and away by Real Madrid in a 5-2 aggregate defeat.
They have won Ligue 1, the French League Cup and reached the French Cup final.