This time the Spaniard did get back to put off the former Manchester United star, with PSG appealing unsuccessfully for a penalty.
Arsenal offered a threat, but the speed at which Emery’s men broke down the flanks was always a huge threat.
Aurier, a right back often to be found further forward than many wingers, presented a huge challenge, particularly for the overworked Monreal.
PARIS ST-GERMAIN (4-3-3): Areola; Aurier, Marquinhos, Silva, Maxwell; Verratti, Krychowiak, Rabiot; Di Maria, Cavani, Matuidi.
ARSENAL (4-2-3-1): Ospina; Bellerin, Mustafi, Koscielny, Monreal; Coquelin, Cazorla; Iwobi, Ozil, Oxlade-Chamberlain; Sanchez.
Referee: Viktor Kassai (Hungary).