The Premier League has changed so much over the last 10 years, particularly as far as managers are concerned.

Back in 2009, Sir Alex Ferguson and Arsene Wenger were proving that head coaches could still last more than a decade at the biggest clubs. The same, however, can't be said in 2020.

Now, the longest-serving managers are found lower down the table with Sean Dyche and Eddie Howe, although Jurgen Klopp's revolution at Liverpool could threaten to buck the trend.

Nevertheless, the changing attitudes towards managers got the team at HITC Sport thinking and they decided to try a fascinating thought exercise on their YouTube channel last year.

'The Irish Guy' hypothesised what the final Premier League table would look like if every club suddenly reappointed their manager from 2009.

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The original video was released in November, so we'll cut the Irish presenter some slack in places, but sit back and enjoy the prospect of England's top division descending into managerial chaos.

20. Norwich City

This might seem a little harsh considering Paul Lambert once led Norwich to back-to-back promotions to the Premier League, but let his recent spell at Stoke City serve as a warning.

Considering the Canaries are already dwelling in 20th place with Daniel Farke at the reins, it seems doubtful that anything would change if a behind-the-times coach suddenly replaced him.

19. Burnley

Ten years ago, Owen Coyle looked poised to consolidate Burnley's position in the Premier League, but there's no doubt that sacking Dyche for the man that fans called 'Judas' would be a catastrophe.

The fact Coyle is currently managing in India with Chennaiyin and recently flopped with Ross County suggests returning to Turf Moor would result in a one-way ticket to the Championship.

18. West Ham United

Manuel Pellegrini and David Moyes were top Premier League managers in their day and neither can seem to steer West Ham to safety, so just imagine if Gianfranco Zola came swanning back to the club.

In the words of The Irish Guy, it would be like 'filling up your car with three pints of milk' and it's hard to disagree when you consider Zola's two wins from 24 games at Birmingham City, his most recent number one job.

17. Sheffield United

Of all the managers on this list, Kevin Blackwell would be the most out of his depth and returning to coaching after seven years by going straight into the Premier League would be an unmitigated disaster.

Much of the Blades' success this season has been down to the brilliance of Chris Wilder and it's credit to the players that they wouldn't be backed for relegation if Blackwell made a mind-boggling return.

16. Brighton & Hove Albion

To be honest, Brighton should count themselves lucky that The Irish Guy hasn't relegated them, because Poyet returning to the Amex Stadium would create the most toxic atmosphere imaginable.

Vicente once called Poyet “the worst person I’ve come across in football” and Poyet, who has been sacked five times since leaving, will have nothing but bitterness for the Seagulls after being sacked on live television.

15. Watford

Upon the video's release, Watford would have been weeks away from Brendan Rodgers taking over in this bizarre scenario, but instead it's the semi-retired forgotten man that is Malky Mackay.

The Irish Guy reckons Watford would be down by Christmas if Mackay genuinely returned, but that the chaos below them with the likes of Poyet and Zola would save their bacon in this fantasy league.

14. Crystal Palace

This seems about right. As much as Neil Warnock couldn't think of many things worse than managing Palace for a third time, you just know he'd do a decent job with this strong squad.

With Wilfried Zaha, Mamadou Sakho and Gary Cahill at his disposal, Warnock would steady the ship in the wake of a Roy Hodgson departure far better than some of the aforementioned clubs.

13. Southampton

Dare we say that Alan Pardew can actually be a decent manager on his day, just look at his early Newcastle days, although it seems a little ambitious to suggest he could do a similar job to Ralph Hasenhüttl.

This strange scenario would see Pardew wave goodbye to the Netherlands after less than two months and keep his fingers tightly crossed that Danny Ings could fire him to a mid-table finish.

12. Aston Villa

Martin O'Neill did an incredible job at Villa Park 10 years ago, but that was before his managerial career tailed off and he had Ashley Young, James Milner, John Carew and Gareth Barry in his squad.

Airdrop him back into a Villa dugout with a newly-promoted squad that's relying on Jack Grealish every week and yes, he'd comfortably keep them up, he just wouldn't rediscover the magic of old.

11. Leicester City

Swapping out Rodgers for Nigel Pearson would be a sure-fire way for Leicester's Champions League hopes to crash and burn, so an 11th-place finish seems about right for the Foxes.

Sure, Pearson can still do a job in the Premier League and instigated Leicester's great escape the year before they won the league, but managing them anywhere near the top four would give him a nosebleed sharpish.

10. Wolverhampton Wanderers

Mick McCarthy screaming orders to Joao Moutinho and Raul Jimenez sounds like a glitch on FIFA 20, yet this Wolves team is so strong that even removing Nuno Espirito Santo wouldn't completely kneecap them.

You'd just have to expect a far more defensive and boring brand of football at Molineux, especially when you consider McCarthy hasn't managed a top flight club in almost eight years.

9. Everton

Bearing in mind what Moyes achieved at Goodison Park, this seems pretty brutal and there's genuine quality in this Everton squad thanks to Richarlison, Bernard, Lucas Digne and even Moise Kean.

But, admittedly, you've got to wonder what Moyes has left in his locker after doomed spells with Manchester United, Real Sociedad and Sunderland, never mind how unpopular sacking Carlo Ancelotti would prove.

8. Newcastle United

This looks at least one place too generous, but there are plenty of Newcastle fans that would argue re-appointing Chris Hughton - who should never have been sacked in 2010 - would be an upgrade on Steve Bruce.

Although this current Newcastle side isn't as strong as the one boasting Kevin Nolan, Joey Barton and a 2010 Andy Carroll, Hughton would be one of the least jarring managerial swaps in this scenario and the Magpies would reap the benefits.

7. Manchester United

Ermmmm, sorry what? Look, United have been absolutely dreadful this season, don't get it twisted, but to say there'd be no improvement at all if the greatest manager in history returned is lunacy.

Would Ferguson still have the desire after seven years out? It's debatable, but look what he achieved with weak United sides over the years and try telling us he would finish seventh with a straight face.

A man who thrashed Arsenal 8-2 with Tom Cleverley and Anderson in the starting XI would surely get a team fielding Andreas Pereira and Odion Ighalo into the Champions League places at least.

6. Arsenal

The statistics don't lie and Wenger boasted a better win rate than both Unai Emery and Mikel Arteta, even in his worst seasons, so you can expect a slight improvement, although we don't think they should be above United.

One of the biggest problems would be the sheer anger from the fans - can you seriously imagine!? - and there'd be questions over whether Wenger has the managerial minerals after two years away from the hot-seat.

5. Tottenham Hotspur

This might be the right sort of area in the table for Tottenham, but fifth place seems completely overblown when you consider how much they've struggled under Mauricio Pochettino and Jose Mourinho this season.

Swapping them out for a weary 72-year-old Harry Redknapp, fresh from 'I'm A Celebrity Get Me Out Of Here' and managing Jordan, would see Spurs roll down the table like, well, one of his jam roly-polys. 

4. Bournemouth

Sigh. Ok, we understand the argument here: Bournemouth would shine as the only club that wouldn't need to sensationally swap managers for the one they had an entire decade ago.

So, yes, we agree that the Cherries would actually steer well clear of relegation, but to suggest they would finish above Arsenal and United sides managed by Wenger and Ferguson is just mental.

This is a team that could easily descend into the Championship in real life and any improvements in this hypothetical scenario would be from other clubs nose-diving, not Howe's men kicking on.

3. Manchester City

There's something absolutely hilarious about the image of Mark Hughes barking orders at David Silva, Kevin De Bruyne, Sergio Aguero and Raheem Sterling. Somebody please make this happen.

With arguably English football's strongest squad, Pep Guardiola leaving wouldn't be a complete disaster, but The Irish Guy believes Hughes replacing him would be like: "giving a Rolls Royce to a drunken toddler." 

2. Chelsea

Ancelotti would be pretty disappointed by this Chelsea team considering the one he managed in 2010, but if an inexperienced Frank Lampard can sustain them in fourth place, then he can definitely prop them up higher.

Tammy Abraham, Mason Mount and Callum Hudson-Odoi would thrive on the Italian's attacking brand of football and he'd absolutely annihilate the clubs re-appointing lower-league managers by five, six or seven-goal margins.

1. Liverpool

Even if Hodgson returned to the dugout, he'd probably still lead this omnipotent Liverpool side - who currently lead by 22 points - to the title, but this is Champions League-winner Rafael Benitez that we're talking about.

Benitez would probably shore up the Liverpool defence even more, which is an impressive feat in itself, and the Reds' front three would manage themselves despite the jarring shift in styles.

This Liverpool team is on the brink of going an entire season unbeaten and re-appointing the coach that marshalled them to a campaign with just two defeats is unlikely to derail their invincibility.

GIVEMESPORT's Kobe Tong says

Am I absolutely mental for thinking United might win the league in this scenario?

If we could teleport a 2013 Ferguson into the dugout, then I certainly believe the Red Devils would be back on top, but I strongly doubt the legendary Scot has that same fire and nous after seven years away.

Consequently, yes, I've got to agree that swapping Klopp for Benitez at the helm of the Premier League's greatest ever team would still see them lift the trophy after 38 games. 

What I can't agree with, though, is Bournemouth qualifying for the Champions League.

Sure, some of these managerial swaps are so mental that the Cherries would have a distinct advantage, but not enough to finish above teams with Mesut Ozil, Paul Pogba and Harry Kane in their squads.

In descending order, I'd personally plump for a top four of: Liverpool, Chelsea, United and City.

Let it show that while reappointing the GOAT of managers would be an incredible cheat code, even changing the face of the Premier League would still see Liverpool walking alone as top dogs.