Jurgen Klopp has taken charge of some top players since being handed his first job in management, at Mainz, in 2001.
He took over the reins at Borussia Dortmund in 2008, building a Bundesliga-winning team which also reached the 2013 Champions League final - and now he is hoping to do the same with Liverpool.
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The Reds face Manchester City in the quarter-final first leg at Anfield on Wednesday, with Sky Bet valuing Klopp's men at 13/8 to qualify for the semis.
With Klopp's management career in mind, we have put together an all-time XI, consisting of players who have worked under the charismatic boss.
It was not easy, but George Pitts has put together a strong-looking XI.
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Probably the position with the least credible options to choose from, due to Klopp having the likes of Simon Mignolet, Loris Karius and…Adam Bogdan at Liverpool.
Weidenfeller is a goalkeeper who is probably lesser known outside the Bundesliga. He was unfortunate to have to compete with Manuel Neuer and Marc-Andre ter Stegen for a place in between the sticks for Germany over the years, therefore having just five caps to his name.
But his reliability and performances have been unquestionable, having made 452 appearances for Dortmund and kept 147 clean sheets, playing a key role in the club’s 2011/12 Bundesliga title (as vice-captain) and run to the 2012/13 Champions League final.
The 32-year-old recently announced his intentions to hang up his boots after the expiry of his current Dortmund contract in 2020. That will bring his spell at the Westfalenstadion up to 12 years and the Polish defender has been a great servant to the club.
He proved to be a reliable player down the right in Klopp’s BVB side, playing 32 games in their league-winning season, scoring four and chipping in with eight assists.
Like the case with goalkeepers, Klopp has not had the best of defenders in his two-and-a-half years on Merseyside and Hummels stands out as his best centre-back of his management career.
Now back at Bayern Munich, German international Hummels has struggled with injuries over the years, but at his best he is a world-class defender, Klopp’s defensive rock for six years.
Granted, it is early days and Klopp is yet to get the best out of Van Dijk, but going on what we know and his potential, he makes the cut here.
The towering Dutchman – who recently scored his first Netherlands goal shortly after being named captain by Ronald Koeman – arrived at Anfield for £75m in January, becoming the most expensive defender in history.
He made a goalscoring start by heading home the winner in the Merseyside derby, going on to keep five clean sheets and helping the club reach the quarter-finals of the Champions League.
Andrew Robertson has shown a lot of promise in recent months as Liverpool’s left-back, but Germany defender Schmelzer has proved reliable for Klopp and Dortmund for a number of years.
He was made captain after Hummels’ departure from the club in 2016 and rarely put a foot wrong for Klopp's men.
Many football fans will not remember the Japanese midfielder’s performance levels being too high during his spell at Manchester United, but it was his displays in two seasons under Klopp which earned him the move to Old Trafford.
Kagawa was a key part of the league-winning side, with a good work-rate and providing quick transitions between defence and attack.
Klopp said of Kagawa in 2013, as reported by Goal: "He is one of the best players in the world and he now plays 20 minutes at Manchester United– on the left wing!
"My heart breaks. Really, I have tears in my eyes. Central midfield is Shinji's best role.
"He's an offensive midfielder with one of the best noses for goal I ever saw. But for most Japanese people it means more to play for Man United than Dortmund. We cried for 20 minutes in each others' arms when he left."
A player who has been unfortunate with knee injuries over the years, but hopefully he can now stay clear of injuries at Manchester City.
We are now starting to see the sort of world-class performances which Gundogan displayed in the Bundesliga under Klopp and Dortmund. He controls the game with his deep-lying playmaker role, providing the link between defence and attack, with excellent technique and a range of passing in his artillery.
Another player who has seen playing time limited in recent years for medical reasons.
Gotze - once compared to Lionel Messi by football legend Franz Beckenbauer - burst onto the scene at Dortmund under Klopp and was one of Europe’s most exciting prospects. He left Dortmund for Munich in 2013, returning in 2016.
His quality is even clearer by the fact he has 63 international caps by the age of 25, in an era full of world-class German talent. He came off the bench in the 2014 World Cup final, writing his name in the history books as he fired the winner past Argentina to secure the title for Joachim Low's side.
An inclusion that requires little justification.
The ‘Egyptian Messi’ has had an excellent first season at Anfield, scoring 37 and assisting 12 in 42 appearances. He has helped Klopp’s Liverpool get over the loss of Philippe Coutinho in January while setting various records this term, including becoming the first Reds player to hit four goals in a game since Luis Suarez in 2013.
It was going to be tough for someone to break into Klopp’s front three (with Sadio Mane just missing out from the Fab Four), but Lewandowski makes it.
A traditional number nine and one of the world’s best strikers, there is no wonder Real Madrid are reportedly looking at the Poland international.
Iceland’s volcanic ash cloud disrupted flights in 2010, preventing Lewandowski from joining Sam Allardyce’s Blackburn and he joined Klopp’s Dortmund later that year.
He scored 30 and assisted 12 in 47 appearances in all competitions in his first season. His Dortmund record reads 103 goals in 187 appearances before moving to Bayern, netting 142 in 184 games.
The Brazilian left Liverpool for Barcelona in a £146m deal in January, after some thrilling performances under Klopp.
The German’s style of football suited Coutinho, who could pick out a pass as well as often finding the net from the edge of the box.
Coutinho spoke of how he enjoyed playing under Klopp, in an interview with Liverpool’s official website in December 2017: “I think the way he's helped me to play when we don't have the ball, when the team is under pressure, is really different.
“We've changed how we play. We've tried to switch to a different style and I think that, bit-by-bit, I'm getting better with that and hopefully that can continue.
“I'm now in a deeper position and I'm always trying to improve, and be able to score goals and set off moves, because my position demands it.
“You become more involved in the game. It's a position that I feel that I've adapted to and I like it.”
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Page last updated at 1500 BST 03/04/18