Manchester United boss Ole Gunnar Solskjaer has called on the club to spend money on new signings before this summer's transfer window closes for business.
Donny van de Beek came off the bench to score in the latter stages, but the Netherlands international is the only new signing at Old Trafford this summer.
The club's executive vice-chairman Ed Woodward has suggested that United will be unable to make any big-money signings before the end of the transfer window due to the financial impact of the coronavirus outbreak.
However, Solskjaer has insisted that the club must improve the squad before the October 5 deadline.
"It has hammered home that we need to improve. That is not good enough against any team in the Premier League," BBC Sport quotes the Norwegian as saying after the clash with Palace.