Jean-Philippe Mateta surged beyond Johnny Evans to finish emphatically for his sixth goal in a row on home turf.

Tyrick Mitchell tapped in from close range after a fine cross by Adam Wharton in the 58th minute and French youngster Olise capitalised on a Casemiro mistake to power a strike beyond a wanting Onana.

From the first minute, Glasner's men looked full of intent against a United side who failed to turn up at Selhurst Park.

As a defensive unit, United put in one of the worst performances of the season with Casemiro and Evans becoming their 14th centre back partnership used this campaign.

Eberechi Eze and Olise were given the freedom of the pitch to control the play and caused United trouble on numerous occasions.

Erik ten Hag's side threatened in a couple of moments with Casemiro twice having goals ruled out - the first for a foul on Dean Henderson and the second for offside.

Odsonne Edouard almost rubbed further salt in the wounds but his injury-time effort struck the upright.

With title-chasing Arsenal next up, United must greatly improve to avoid another thrashing.

No European football for United a possibility

At one stage in the season, Ten Hag's side looked as though they could put pressure on Aston Villa for a Champions League spot.

That dream is long gone and United are now at risk of missing out on qualifying for any European competition next season.

They must either finish seventh in the Premier League to secure Europa Conference League football or beat Manchester City in the FA Cup final to seal a Europa League place.

One win in seven has seen United slide down the table into eighth and their fixtures do not get any easier with league leaders Arsenal visiting Old Trafford on Sunday.

A defeat by this scoreline can be hugely damaging but for those United fans who made the trip to Selhurst Park on a Bank Holiday Monday, it is the manner in which the players seemingly looked disinterested that will hurt the most.

Wharton an outsider for the England squad?

All eyes have been on United's talented youngster, Kobbie Mainoo, and rightfully so but it is hard to ignore the performances being put in by midfielder Wharton since his January move.

Wharton, 20, has impressed since day one at Selhurst Park after his £18m move from Blackburn Rovers on transfer deadline day.

Up against England internationals Mason Mount and Mainoo, Wharton shone with his slick passing between the lines and combativeness in defence.

Positionally, Wharton is excellent. Especially for someone at such a tender age. He has the ability to know exactly where to be on the pitch and when it is best to release the ball for a team-mate.

The former Blackburn man has been a huge addition to a Palace side who have won four of their past five.

A fantastic cross for Joachim Andersen to set up Mitchell's goal was just a small sample of the quality Wharton brings.

England boss Gareth Southgate was in attendance in London with a preliminary squad for Euro 2024 set to be announced on Tuesday, 21 May and with the Three Lions short of players in the mould of Wharton, could a shock inclusion be on the cards?