After a season away from European football’s top table, the Red Devils returned to action at the Parc des Princes, where just 19 months ago they secured one of their greatest ever comebacks in this competition.
Rashford fired home the late winner that night and again sealed a last-gasp United triumph in the French capital, where last season’s Champions League finalists PSG were deservedly overcome 2-1 in Tuesday’s Group H opener.
Many predicted a home win given the side’s contrasting fortunes of late, with David De Gea making two important early stops before Anthony Martial was brought down in the box by Abdou Diallo midway through the first half.
Stand-in skipper Bruno Fernandes saw his penalty saved for the second successive match, but held his nerve to find the net after the Video Assistant Referee ordered a retake for Keylor Navas straying off his line.
United looked convincing in a 3-5-2 formation and could have gone further ahead, only for Martial to glance a Neymar corner into his own net and spark a helter-skelter conclusion.
Both sides had chances to win but United looked more impressive and, just as Solskjaer’s side looked set for a morale-boosting draw, Rashford lashed a superb late winner to stun PSG once more.
Additional reporting by AP.