Premier League management is not an easy task, as we’ve seen from those who succeeded elsewhere but found it tough to make the same impact in England.
However, there are managers who struggle, and then there are managers who really, really struggle.
The 10 men below didn’t all arrive in England's top flight with identical reputations, but there is a case for saying they all left with similar legacies.
Here’s the Daily Star Sport's look at the 10 worst Premier League managers from the last decade, Including some big names you may have forgotten even managed in the top flight.
1) Jan Siewert
Siewert’s task at Huddersfield was never going to be easy, based on David Wagner’s miracle-working the previous season combined with the tricky situation in which the German left his successor.
However, even with that caveat, it was a pretty miserable few months.
When Wagner left the John Smith’s Stadium, Huddersfield were bottom of the Premier League with 11 points from 22 games. By the end of the campaign, they were bottom of the Premier League with 16 points from 38 games - somehow worsening their points-per-game record.
Siewert’s only win came via a stoppage-time Steve Mounie goal against Wolves, while the Terriers failed to score in more than half of his top-flight games in charge.
2) Terry Connor
It was a close call between Siewert and Connor, but the latter climbs one spot on the grounds that he didn’t stick around to make things even worse in the Championship.
Wolves were winless under the rookie, who wasn’t thought to be their first choice after a 5-1 defeat at home to West Brom saw Mick McCarthy relieved of his duties.
There was at least a spirited comeback from 4-1 down to earn a point at Swansea, and Connor’s four points from 13 games represents a points per game tally on a par with Siewert’s five from 15.
Wolves were relegated from the Championship the following season, so perhaps it wasn’t all his fault.
3) John Carver
When Carver took over from Alan Pardew in December 2014, Newcastle United were 10th in the Premier League, 13 points above bottom club Leicester City and 10 clear of the relegation zone.
By the final weekend of the season, they were behind Leicester, and in need of a win against West Ham United to make sure of their safety, having thrown away a lead to lose to already-relegated QPR the previous week.
They got the win they needed, thanks to their opponents’ own poor form at the end of the season, but to even find themselves in such a position was near-unforgivable.
The ‘highlight’ was a run of one point from 10 games, carrying the Magpies from 11th to 17th, and he finished with 13 points from 19 games.
4) Rene Meulensteen
After a tough start to the 2013/14 season, Fulham made their first mistake by appointing rookie Meulensteen and their second by giving him money to spend in the January transfer window.
He signed two players known to him from his time as a Manchester United coach - Larnell Cole and Ryan Tunnicliffe, neither of whom have played Premier League football since Fulham’s relegation - and spent £11million on an injured Kostas Mitroglou.
Meulensteen won three games, but also led his team to a 6-0 defeat at newly-promoted Hull City and a 4-1 reverse at home to Sunderland.
At least we’ll always have the ‘81 crosses’ game against David Moyes’ United.
5) Felix Magath
Relegating a team is bad on its own, but Magath’s influence went further after he replaced Meulensteen in the dugout.
The German’s record of 12 points from 12 games at Craven Cottage is not what you’d call ‘good’, but he really accentuated that with four straight defeats at the start of the next season.
He also allegedly told Brede Hangeland to treat an injury with cheese (Magath denies this), while former Fulham midfielder Danny Murphy said: "It has put Fulham in a world of trouble now because all the good and experienced players that we had last season were desperate to leave and did so as quick as they could."
6) Steve Kean
Kean’s story is similar to that of Carver, with the Scot taking over a Blackburn side 13th in the league and leaving his team at risk of relegation going into the final weekend of the season.
The mistake he made was sticking around for another year, and turning a run-of-the-mill bad stint into an outright awful one.
Kean’s Blackburn picked up just 31 points in his full season at Ewood Park, kept off the bottom spot by Connor’s Wolves, and a transfer policy which brought the likes of Jordan Slew, David Goodwillie and Myles Anderson to the club was… well, we’ll let you finish that sentence.
7) Frank de Boer
In Frank de Boer’s defence, he was only given four games by Crystal Palace.
However, he did lose all four. Without his team even scoring a goal. Including home games against two of that season’s bottom five.
His successor Roy Hodgson also lost the next three without scoring, so there’s some mitigation, but not much.
Basically, the damage he did was salvageable, which is more than you can say for some others here.
8) Remi Garde
Aston Villa’s start to the 2015/16 season wasn’t what you’d consider brilliant, with just four points in 10 games under Tim Sherwood.
Enter Garde, whose first 10 games brought… four points.
He did follow that with two whole wins, but it’s fair to say the Frenchman - sacked in March after six straight defeats - wasn’t popular with his players.
Gabby Agbonlahor spoke this year of the “toxic” atmosphere created by the former Arsenal player during his time in charge.
“He never got involved, even on game days, if you watch games, he just sat in the dugout and shook his head,” Agbonlahor said.
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9) Bob Bradley
Perhaps Bradley would have turned things around given more time at Swansea, but he was a dead man walking more or less from the moment he replaced the popular Francesco Guidolin in October 2016.
The Swans’ supporters trust responded with a letter in which they said: “We are also frustrated and angry that the club have allowed the speculation over the manager’s future to be played out in public and want to thank Francesco and his team for their time at Swansea, in particular the professional way in which Francesco has dealt with the recent speculation. We wish them all the best for the future.”
Eight points from 11 games didn’t help endear the American to supporters, though a 5-4 win over Crystal Palace (when they trailed going into the final minute) was at least entertaining, and Bradley was dismissed after a 4-1 home defeat to West Ham on Boxing Day.
10) Alan Irvine
You could be forgiven for forgetting Irvine’s West Brom spell, but if you’re a Baggies fan you’ll remember it very clearly.
A surprise appointment after Pepe Mel’s exit, having spent the previous three years in charge of Everton’s youth team, Irvine broke the club’s transfer record on Brown Ideye and watched the Nigerian score two goals before the turn of the year.
Irvine was sacked in December, with Albion a point above the bottom three having lost seven of his last nine games in charge.