The Eagles, who defeated United for the first time in the Premier League, couldn't help but take full advantage of their triumph by hilariously mocking the Red Devils.
The now-Inter striker split opinion among supporters, but he averaged a goal every two games and no other player boasts a similar ratio.
As much as United pressed forward in the second half, they couldn't conjure the final pass to break down a robust Crystal Palace rearguard, and their own defensive frailties, supposedly reinforced with the addition of Harry Maguire and Aaron Wan-Bissaka (who played against his former club), proved their undoing, particularly with David De Gea no longer being the impenetrable barrier of old. There's a sense that fans are waiting to find out which version of this team is the truth: Will the real Manchester United please stand up?
Daniel James scored late on to hand United the chance to walk away with a point, but that was undone after David de Gea's howler handed Patrick van Aanholt the victor for his side. The 17-year-old was on before the hour mark - a show of faith in a young player at a crucial stage of the game.
"The first half was poor".
But the United boss was also unhappy the hosts weren't awarded another spot-kick before Patrick van Aanholt's late victor.
DF Luke Shaw, 6 - Set up a chance for Scott McTominay from a corner, blazed over from the corner of the area, then went off with a hamstring injury all before 35 minutes were on the clock. With too many exhausted players committed forward, Wilfried Zaha broke through, the ball fell to Van Aanholt, and De Gea was beaten at the near post after an hour of having nothing to do.
To add to Solskjaer's irritation, he also believed United were unfortunate not to be awarded another penalty in the second half when Rashford was seemingly felled in the box.
Even after Daniel James scored a fine equaliser, United still found a way to ruin their day in the Salford sun.
FW Mason Greenwood, 6 - Didn't see much of the ball.
Solskjaer has options on the bench if he needs to make changes today, including Juan Mata and Nemanja Matic.