United's youngsters did not flounder against Sam Allardyce's experienced side in the league finale at Old Trafford, with Josh Harrop marking his first appearance with a goal that Paul Pogba added to as United comfortably won 2-0.
Rob Dawson spoke with Ander Herrera about his future at Manchester United and if he could become captain one day.
Palace upped the tempo in the second half with Christian Benteke's header striking the post, while Joel Pereira distinguished his first United start with a fine save from Luka Milivojevic's free-kick.
Don't ask me too many things because now I am in a final.
When then asked if he knew his team for the final in Stockholm, the manager replied: "I know, but let me go".
Jose Mourinho talked about winning the title at his unveiling in the summer, but his team never managed to find lasting consistency in the Premier League despite the expensive additions of Paul Pogba, Zlatan Ibrahimovic and Henrikh Mkhitaryan.
Taking no risks ahead of Wednesday's make-or-break Europa League final against Ajax, Jose Mourinho fielded a number of the club's young prospects in the Premier League dead rubber against Crystal Palace.
And he seamlessly took to the vicissitudes of Premier League football from minute one, diligently going about his business at the back as Man United claimed a clean sheet.
It wasn't only Harrop that impressed with the likes of Demi Mitchell, Scott McTominay and Angel Gomes all impressing.
After just 14 minutes, 21-year-old midfielder Harrop, who had already enjoyed a couple of exciting forays down the left flank, raced onto a superb through ball from Pogba. We had a go in the second half but couldn't find a goal to put a little bit more pressure on Man United and we finish this season with a loss.
While the United players were doing their customary end-of-season lap of honour, Mourinho have MUTV a very short interview before heading in to meet the press.
It was the kind of cutting edge Mourinho will have wished his side had displayed earlier in the season, with Harrop curling just wide as Palace struggled to breakdown the hosts' young defence.
After beginning the campaign on loan at Portuguese club Belenenses, the 20-year-old made his United debut as a late substitute in the FA Cup win against Wigan after being recalled in January.