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Joel Matip, Marko Grujic, Loris Karius, Piotr Zielinski.

There’s little chance that any of the above names featured in Liverpool supporters’ wanted lists when they were eyeing up potential new arrivals this summer.

But three of the four have already arrived at Liverpool, and the Reds have submitted a bid for the other .

If the same quartet had arrived last summer, questions would have been asked by Reds fans. The oft-criticised transfer committee would be in the firing line.

But Jurgen Klopp has changed all that.

Everyone knows the success stories of Robert Lewandowski and Mats Hummels, bought from Lech Poznan and Bayern Munich’s reserves to become two of the finest players on the planet - but Klopp would search even further across the globe in his pursuit of bargains.

Not all worked, of course. For every Lewandowski there was a Damien Le Tallec, brother of Anthony, but together with Michael Zorc and Dortmund’s recruitment team, Klopp would often unearth hidden gems.

It’s a system Liverpool are desperate to replicate at Anfield. They set up the transfer committee, now they have the best candidate to lead it.

Here are some of Klopp’s more obscure signings from his days at Dortmund, and a look at how they got on in Germany.

Lucas Barrios

Bought from Colo Colo in Chile, for £3.15m

After a year in charge at Dortmund Klopp moved to solve his goalscoring problems with the signing of a little-known Paraguayan striker Lucas Barrios.

European clubs had been sniffing around the then 24-year-old attacker. French club Nancy had failed to push through a transfer for Barrios, Panathinaikos and Espanyol had also tried to agree deals, but it was Klopp’s Dortmund who paid the £3.15m it would take to convince Colo Colo to part with their star man.

Barrios had been in hot form for the Chilean club, scoring 52 goals in 59 games in a two-year spell. But before that he had struggled badly at Mexican club Atlas, scoring just one goal in 14, as well as Argentinian lower league club Tiro Federal.

But at Dortmund Barrios was a roaring success. 23 goals in his first season and another 21 in his second fired Klopp’s side up the Bundesliga table and to the title.

Barrios would struggle for form in his third season, scoring just five times, and Lewandowski would eventually take his place in the team - but Klopp would double his money in the summer of 2012, with Guangzhou Evergrande paying £6.5m for his services.

Shinji Kagawa

Bought from Cerezo Osaka in Japan, for £275,000

A player so good Klopp signed him twice.

Kawaga was probably the finest of all Klopp’s bargains, The midfielder was spotted playing for Japanese second division side Cerezo Osaka in 2010 and Dortmund took advantage of a release clause in his contract to bring him in for a bargain fee.

In truth, he was highly-rated in Japan, top scoring in the second division and was known as an exciting prospect - but it was Dortmund who took a chance on him, a chance which paid off handsomely.

Kagawa hit the ground running, scoring 12 goals in his first season and 17 a year later.

Man United when then come calling with a fee of around £12m.

Two years later and Klopp would sign Kagawa back for just £6m.

Felipe Santana

Bought from Figueirense in Brazil, for £1.6m

Klopp dipped into the South American market almost immediately upon his arrival at Westfalstadion.

The then-BVB boss had already brought Neven Subotic with him from Mainz when he moved to strengthen his defence with the £1.6m signing of Brazilian defender Felipe Santana from Figueirense.

The pacey defender showed his eye for goal with a strike on his debut against Hoffenheim and another in the following game against Stuttgart.

Santana would go on to score probably the most memorable goal of Klopp’s reign - the decider in the thrilling 3-2 comeback victory over Malaga that would send Dortmund into the Champions League semi-finals.

In truth, Santana was never a regular starter under Klopp, but at £1.6m he proved to be a useful squad player and played his part in some key victories for Dortmund.

Santana would move to fierce rivals Schalke in 2013 and would slam his old boss as “stupid” after his departure.

But the Brazilian remains another example of Klopp’s clever use of the transfer market.

Kevin Großkreutz

Bought from Rot Weiss Ahlen in Germany’s second division, on a free transfer

Klopp wasn’t afraid of dipping into the lower divisions in his attempts to find a bargain.

Indeed, Klopp searched far and wide for additions and plenty of players arrived from the 2.Bundesliga during his reign - but there weren’t many more successful than the man found on Dortmund’s doorstep.

Großkreutz had been with Dortmund has a boy, but left to move to lower league side Rot Weiss Ahlen in 2003 and reaped the benefits.

His good form there convinced Klopp to sign him up on a free transfer and he went on to become an ever-present at Dortmund.

236 appearances followed, with 27 goals, before he left the club following Klopp’s departure in 2015.

Mitch Langerak

Bought from Melbourne Victory in Australia, for £375,000

Perhaps not a roaring success, but an example of the far-reaching transfer strategy employed by Klopp’s Dortmund.

Australian goalkeeper Langerak had been impressing for Melbourne Victoryin Australia’s A-League. winning the Harry Kewell award for best U23 player, before he sealed a move to Germany in 2010.

Dortmund paid just £375,000 for the then 21-year-old and, as back-up to long-serving Roman Weidenfeller, Langerak would play his part in some of Dortmund’s most memorable victories under Klopp.

Langerak’s debut was a 3-1 victory over Bayern Munich, he came on in the German Cup final victory over the same opposition in 2012 and helped Klopp’s Dortmund beat Bayern a third time in the Super Cup the following year.

In fact, Langerak was something of a good luck charm for Klopp, his first seven games for Dortmund all resulted in victories.

The Australian international would be another to depart Dortmund after Klopp’s departure in 2015 - but Dortmund one again made a profit when Stuttgart paid £2.6m to seal the goalkeeper’s signature.

A round-up of the day's transfer rumours