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The pressure increased on Louis van Gaal after Manchester United were handed an embarrassing beating at Stoke.
Bojan Krkic took advantage of a terrible error by Memphis Depay to put Stoke ahead and Marko Arnautovic scored a 25-yard screamer as Van Gaal 's position came under even more scrutiny after going seven games without a win.
Do not be fooled by the 2-0 scoreline. This was a comprehensive win for Stoke, one that caused glee among the home supporters who branded United "boring" throughout.
"You're getting sacked in the morning," the home fans chanted when Arnautovic drove his fierce shot into the top corner and one Stoke fan dressed as a cross between the Grim Reaper and Jose Mourinho waved an oversized P45 in Van Gaal's direction.
With Mourinho on the market, and United looking like they have forgotten how to win - and play attractive football - Van Gaal's position is looking more precarious than ever.
The Dutchman, who dropped Wayne Rooney from his team for the first time, demanded an apology from the media for stories suggesting he would be replaced by Mourinho on Wednesday, but it is the 2,557 United fans who travelled to the Britannia Stadium on Boxing Day who deserve an apology for this latest sorry performance.
It was clear from the first whistle that Stoke had the hunger, desire and confidence United lacked.
There was a moment of panic when Jack Butland miscontrolled Arnautovic's poor back-pass while Anthony Martial raced at the Stoke goalkeeper, but the hosts cleared.
That was the first and last sniff of goal United would have in the first period.
Daley Blind and Ashley Young had no answer to the trickery and pace of Xherdan Shaqiri and Arnautovic.
Blind, still dizzy from taking a ball to the nose from Geoff Cameron, was turned inside out by Shaqiri, who was only stopped by an Ander Herrera foul. The Spaniard was doing little to justify his place in the starting XI and gave the ball away twice in the opening 15 minutes.
When United kept possession, they did little with it. The Stoke supporters chanted "boring, boring, boring" every time United had the ball - and they were right. The visitors were woefully short of ideas.
When Stoke took the lead it came as no surprise. That it came about because of an embarrassing gaffe from a United player came as no shock either.
Depay, a ?25million player who scored 22 league goals for PSV Eindhoven last year, tried - and failed - to head a simple ball back to David de Gea, Glen Johnson stole in and squared to Bojan, who tapped in.
The manner of Stoke's second goal was just as embarrassing for United. Ashley Young flung his right hand up in the air to block Arnautovic's cross. Kevin Friend awarded a free-kick, which Bojan took. His shot cannoned off the wall and fell to Arnautovic, who hit the fiercest of drives into the top corner.
Van Gaal looked on despondently. His mood would have darkened further had Arnautovic scored another when through on goal moments later but luckily for United, the Austrian shot wide.
Van Gaal brought Rooney on at half-time and the captain added energy and fight - he caught Philipp Wollscheid in the face with his forearm while jumping for the ball - but little quality.
Stoke, a club who just a few years ago were effectively branded a rugby team by Arsene Wenger, were still by far the better side. The Potters were toying with United.
When the ball went out of play for a Stoke throw, Mark Hughes demanded it be returned quickly. He did not want to settle for 2-0. He wanted to inflict a real hammering on his old employers.
There was a brief glimmer of hope for Van Gaal when Rooney squared for Marouane Fellaini, but the Belgian scuffed his shot and Butland saved. There was no way back for the visitors.
TWEET OF THE MATCH
@rioferdy5: "I'm not even surprised....that's what hurts even more at @ManUtd ....come on boys" - former Manchester United defender Rio Ferdinand was not impressed with the club's latest performance.
David de Gea: 6
Ashley Young: 4
Phil Jones: 5
Chris Smalling: 5
Daley Blind: 4
Michael Carrick: 5
Marouane Fellaini: 4
Juan Mata: 4
Memphis Depay: 3
Ander Herrera: 3
Anthony Martial: 4
Wayne Rooney: 4
Andreas Pereira: 5
Jack Butland: 8
Glen Johnson: 7
Ryan Shawcross: 8
Philipp Wollscheid: 7
Erik Pieters: 7
Glenn Whelan: 6
Geoff Cameron: 7
Xherdan Shaqiri: 8
Ibrahim Afellay: 7
Marko Arnautovic: 9
Bojan Krkic: 9
Marco van Ginkel: 6
Mame Diouf: 6
Charlie Adam: 5
Marko Arnautovic: Stoke caused United troubles across the final third all afternoon and no one did as much damage as Arnautovic. The forward occupied all three positions behind Bojan Krkic at various times in the match. He was too strong for United's defenders, who bounced off him when he ran with the ball. He picked United apart when he lifted his head up and took his goal superbly well.
MOMENT OF THE MATCH:
Arnautovic's goal. A late contender for the best goal of 2015 - the Austrian showed superb composure to steady himself when the ball dropped to him after Bojan's shot was blocked and he rifled the ball into the top corner from 25 yards to make it 2-0. David de Gea had no chance.
VIEW FROM THE BENCH
Van Gaal's position looks more precarious than ever thanks to this defeat. United are now without a win in seven matches and Van Gaal has some questions to answer. There was a plethora of top-quality international players on the pitch at Stoke, but none of them performed. Wayne Rooney may have been poor this season, but dropping your captain for such a big game was ultimately a mistake. Stoke boss Mark Hughes, on the other hand, rightly identified the full-back positions as United's weak spot and exploited that to perfection, with Arnautovic and Xherdan Shaqiri both causing Daley Blind and Ashley Young no end of problems.
MOAN OF THE MATCH:
Diving: Anthony Martial feigned a trip looking to earn a penalty in the first half. Referee Kevin Friend did not fall for it and ordered the Frenchman to get up. The official did not book Martial, but he had his yellow card out of his pocket after the break when Bojan went to ground in the United box without being touched. The striker did not appeal for a penalty, but it was clear what he was trying to do and deserved his booking.
WHO'S UP NEXT?
Everton v Stoke (Barclays Premier League, Monday, December 28)
Manchester United v Chelsea (Barclays Premier League, Monday, December 28)