da mrbet： The German has revolutionised Liverpool after rejecting advances from United – but which coach could have a similar impact at Old Trafford?

da esport bet： No manager has traumatised Manchester United quite like Jurgen Klopp and it is fair to say that Red Devils fans, a bit like their Blue neighbours, will be delighted to see the back of the German when he departs as Liverpool coach at the end of the season. The Merseysiders have won seven of their 19 matches against United under Klopp with some unforgettable scorelines, above all last year's incredible 7-0 hammering at Anfield.

Before he leaves, Klopp has two more opportunities to further twist the knife into United: Sunday's FA Cup quarter-final tie at Old Trafford and April's visit in the league. And if he can lead Liverpool to a 20th league title to level United's record tally of English league crowns, his mission on Merseyside will be well and truly complete.

Since succeeding Brendan Rodgers in 2015, Klopp has galvanised Liverpool and turned them back into the formidable force they were in the 1980s. In the same period, United have gone through five managers, all of differing profiles, and have been ultimately disappointed with each one. Every step forward has been followed by two steps backwards, with the end result being a club in stagnation.

So how do United find their Klopp and appoint a manager who can truly elevate them away from mediocrity and back to the elite?

Getty The dismal 'Disneyland' pitch

it is worth remembering that history could have turned out very differently had Klopp accepted an offer from then chief executive Ed Woodward to take charge of United in 2014. At the time United's hierarchy were losing faith in David Moyes and Klopp was perhaps the most likable coach in European football, having won successive Bundesliga titles with Borussia Dortmund and reached the Champions League final the year before.

According to , a book by German journalist Raphael Honigstein, Woodward flew out to meet Klopp and try to convince him to come and coach United. But Klopp was left baffled by the pitch.

"Woodward told Klopp that the Theatre of Dreams was 'like an adult version of Disneyland', a mythical place where, as the nickname suggested, the entertainment was world class and dreams came true," Honigstein wrote. "Klopp wasn't entirely convinced by that sales pitch — he found it a bit 'unsexy', he told a friend — but he didn't dismiss the proposition out of hand either."

Klopp decided to turn down United's approach to remain at Dortmund for one more year before stepping down in 2015 after a dismal final campaign. Klopp found a kindred spirit in Liverpool, seeing in them, rather like Dortmund, a fallen giant in a downtrodden city a with a passionate fan base.

The idea of resuscitating them motivated him, as he later put it: "I was on fire from the first second". Liverpool fans were on board with Klopp before his appointment was even official: 35,000 people tracked his flight from Dortmund to Liverpool John Lennon Airport and scores of fans turned up outside the Hope Street Hotel, where he signed his contract.

AdvertisementGettyThe worst succession plan

No United manager has generated anything like that excitement, not even Ferguson. And that is despite the club appointing some big names with big reputations and achievements since the legendary Scottish manager retired in 2013. The Red Devils have tried almost every single profile of coach but none of them have worked.

At first they sought to hire what they thought was a similar character to Ferguson when they chose David Moyes as his successor. But they soon found that despite Moyes coming from a similar working-class background in Glasgow – and showing loyalty to one club for more than a decade – he lacked the authority, aura and tactical nous of Ferguson.

Moyes soon found out that what worked at Everton did not necessarily work at United and serial winners such as Rio Ferdinand and Nemanja Vidic did not take kindly to being asked to play like Phil Jagielka. They struggled to get on board with a manger who had not won a single trophy in a long career. Moyes' reactive style of play did not chime with fans either and it did not work in an increasingly competitive league, with United finishing seventh that season.

There was also an inconvenient truth: Ferguson had left him with an ageing squad full of players who had passed their peak and an overhaul was needed. Moyes was not the right man to lead it. His appointment will go down as one of the worst succession plans in football history.

Getty Van Gaal's legacy of boredom

United chose a radically different candidate to succeed Moyes when they hired Louis van Gaal. The larger-than-life Dutchman was a proven winner and had triumphed in the Netherlands, Spain and Germany. But most of his achievements at club level had been long before he took charge at Old Trafford, such as winning the Champions League in 1995 with Ajax.

His brand of possession football, which was not as advanced as that of Barcelona and Bayern Munich at the time and placed no emphasis on pressing, produced one of the blandest eras of football United fans have ever witnessed.

Although there were some good moments, the overall impression was a team only capable of passing the ball sideways and that could bore audiences to sleep. Attendances at Old Trafford dropped and the club became genuinely worried that fans would not want to renew their season tickets.

Van Gaal's unique personality also alienated a fair few players, particularly Memphis Depay and Angel Di Maria, who were both signed for big money but were big disappointments.

Getty Mourinho's divide and rule

With a second managerial appointment going wrong, the club took the obvious choice and hired Jose Mourinho, who everyone considered a born winner and who had lifted the Premier League just one year previously with Chelsea. Woodward conveniently ignored the fact that the Portuguese had also presided over a disastrous season with the Blues and the team were on the brink of the relegation zone when he was sacked.

As he has done at every single club he has coached, Mourinho adopted a policy of divide and rule. While he was worshipped by some players, namely Ander Herrera, he hung many more out to dry. There was some success, with United winning the League Cup and the Europa League, earning a second-placed finish in the Premier League and reaching the FA Cup final.

But those triumphs were overshadowed by devastating defeats in which the team showed no ambition, particularly the home loss by Sevilla to exit the Champions League in 2018. That was when Mourinho showed the nasty side of his character and disrespected the club with his rant about 'football heritage'.

Under the Portuguese, United had become Mourinho FC and the trade off was not worth it as, just like with every previous club, there was a downward spiral in the third season and he was sacked with the team sliding towards mid-table and with a bruised dressing room.