World Cup 2018: 5 players whose value has significantly increased 

FIFA World Cup is the biggest platform for a footballer to showcase his skills. Players including Mesut Özil, James Rodriguez, Daley Blind, Marcos Rojo, Sami Khedira and Keylor Navas have gone on to play for some of the world's biggest clubs because of their previous World Cup performances.

Some of the established stars like Romelu Lukaku, Harry Kane, Diego Costa, Eden Hazard, Kevin de Bruyne and Cristiano Ronaldo are having a great tournament in Russia.

Also, the 2018 World Cup has already brought the best from some of the exciting young talents across world football. As a result of their impressive displays, the players' values are continuing to rise at present.

With the transfer window currently open, some of these players could make their move to a bigger club this summer and will definitely not come cheap.

On that note, let's take a look at five players whose market value has increased significantly because of their World Cup displays so far:

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#5 Aleksandr Golovin (Russia)

Golovin has been performing well for Russia in the World Cup

CSKA Moscow star Aleksandr Golovin has played a stellar role for Russia in their qualification to the last-16 in this year's 2018 World Cup. He is already under the radar of many top European clubs and unsurprisingly, his displays are attracting plenty of interest.

Golovin was excellent for the hosts during their first two group stage fixtures. The 22-year-old playmaker scored and assisted two more in the opening day rout over Saudi Arabia, before he was again instrumental in their 3-1 win over Egypt on matchday two.

After his exceptional displays in the tournament thus far, the Russians have unsurprisingly increased their valuation on him. Juventus' initial bid of €15million was reportedly rejected by his club, who are now demanding a fee closer towards €25-30m for his services.

#4 Hirving Lozano (Mexico)

Lozano celebrates his goal against Germany

Mexico have qualified for the Round of 16 after some inspired displays in the group stages. Most of their players have played some excellent football and Lozano, in particular, was a standout performer.

Lozano has quickly established himself as one of the World Cup's superstars - after a memorable display helped down favourites Germany on matchday one.

The 22-year-old, currently at Eredivisie side PSV, has netted one and created another in the tournament thus far going into the weekend's knockout rounds. His tireless workrate - especially in a defensive sense - passing range and attacking threat were ever-present during the group stages, though time will tell whether he can replicate this against tougher opposition.

#3 Juan Quintero (Colombia)

Quintero celebrates his goal in the World Cup

Though Radamel Falcao and James Rodriguez stole all the limelight as expected, Juan Quintero was Colombia's star in the group stage. One of their best performers thus far at the World Cup, he has delivered some impressive performances along the way.

His deft free-kick against Japan was a piece of creative genius and one of the best moments from an eventful group stage. A versatile midfielder, Quintero already has a goal and two assists to his name in Russia.

The Porto star, currently out on-loan at Argentine side River Plate, is attracting interest from top European clubs. Reports suggest both Tottenham and Real Madrid have revealed an interest in the 25-year-old's signature, and are monitoring his progress.

#2 Isco (Spain)

Isco is proving to be Spain's hero at the World Cup

Isco is one of Spain's star performers in the World Cup thus far. He has clearly demonstrated during the group stage that when granted the freedom to play his game, he can single-handledly create goalscoring opportunities and make attacks happen at will.

Although Cristiano Ronaldo stole the headlines in Spain's 3-3 draw against Portugal on matchday one, Isco was easily the best player on the pitch. He also played an important role in the 1-0 win against Iran and scored a crucial goal during their 2-2 draw against Morocco.

The Real Madrid midfielder, 26, only started 21 La Liga matches last season and could feel inclined to make a move away from the Bernabeú this summer. His stock is constantly on the rise and given his impressive World Cup displays, he's doing his reputation no harm either.

Every top club across Europe would love to have a player of his calibre in their ranks, though he will not come cheap.

#1 Jesse Lingard (England)

Lingard is getting better every game

Jesse Lingard was one of the most underrated players in England prior to the 2016/17 campaign. He had a breakthrough campaign last term, when he starred for Manchester United - and continues to improve with regular minutes under his belt.

Lingard scored a stunning goal against Panama and was England's most significant goalscoring threat in their group stage games. His presence in-and-around the opposition area proved too much to handle and he too had an eye for goal.

England are set to play Colombia in the Round of 16 next week and Lingard has a significant role to play within the final third if the Three Lions are to go all the way during this tournament. A handful of impressive displays for England already has increased his value and justified United's trust in him, by giving him a new lucrative contract in recent months.