The French giants may not have yet proven entirely convincing despite an ambitious summer recruitment drive and were perhaps fortunate to come away with a victory over Manchester City last month, though a home game against a Leipzig side out of form offers a real opportunity.
A win here could take them as far as four points above City should Club Brugge manage to spring a surprise in the earlier 17:45pm BST kick-off. When the groups were drawn, that would have seemed somewhat fanciful.
Luckily for them, Lionel Messi makes his comeback to club football after sitting out of Friday night’s Ligue 1 win over Angers following his international excursions with Argentina. Neymar, however, will miss the game with a groin injury he picked up away while with Brazil.
Mauro Icardi, meanwhile, has been afforded time off due to personal reasons.
PSG starting XI: Navas, Hakimi, Marquinhos, Kimpembe, Nuno Mendes, Ander Herrera, Verratti, Gueye, Messi, Mbappé, Draxler.
Tuesday 19th October 8pm BST
Venue: Parc des Princes, Paris.
Injured: Sergio Ramos (calf), Leandro Paredes (thigh), Keylor Navas (muscle), Julian Draxler, Layvin Kurzawa (illness), Mauro Icardi (personal)