Erling Haaland is already being described as a generational talent. 

The 19-year-old has continued his extraordinary form since joining Borussia Dortmund and once again, he was at the centre of the headlines in their Champions League win over PSG. 

Norway's hopes of qualifying for Euro 2020 via the playoffs will be resting on his shoulders as he is by far and away their biggest star, despite having played just twice for his national team due to his age. 

Haaland's incredible rise got us thinking about the most valuable young players in the world, using Transfermarkt and their guide to those aged 21 or under. 

While the striker is only worth £54m currently due to his low release clause (superb work, Mino Raiola), his price tag is sure to rocket in the coming years. 

As it stands, though, we've gone in search of the youngster with the biggest market value from all of the top 50 countries in the world, according to FIFA rankings. 

50. Scotland - Billy Gilmour (£2.7m)

The 18-year-old has only made two appearances for Chelsea so far but he is already worth a couple of million. 

49. Bosnia and Herzegovina - Ermedin Demirovic (£900,000)

Demirović is yet to break into the Bosnia and Herzegovina senior team but that's sure to change as he continues to raise his profile in Switzerland with St Gallen. 

48. Jamaica - Emelio Rosseau (£113,000)

Rousseau has shown his versatility playing as a wing-back for Portmore United. 

47. Ghana - Mohammed Salisu (£9m)

The Real Valladolid defender has been linked with Manchester United and Real Madrid so it would be no surprise to see him make a step up soon. 

46. Costa Rica - Luis Diaz (£540,000)

Not to be confused with the Porto winger, who hails from Colombia. Luis Díaz Espinoza has been making a name for himself in the MLS with Columbus Crew. 

45. Czech Republic - Alex Kral (£6.75m)

Physically, he may resemble David Luiz, but let's hope that's where the similarities end. 

44. Norway - Erling Haaland (£54m) 

Haaland has 11 goals in his first eight games at Dortmund. That's sure to catch the eye of an even bigger fish in the next year or so. He's already being tipped as a future Ballon d'Or winner. 

43. Morocco - Achraf Hakimi (£40.5m)

Hakimi is already eyeing up a permanent move to Dortmund after settling in well on loan from Real Madrid. 

42. Australia - Daniel Arzani (£900,000) 

Hopelessly unlucky. Arzani tore his ACL on his Celtic debut and has since been trying to get into the first team regularly. He's still on loan from Manchester City. 

41. Paraguay - Sergio Diaz (£900,000)

Another Madrid loanee, back in his native land with Cerro Porteño currently. 

40. South Korea - Lee Kang-in (£18m)

Valencia's attacking midfielder has only been a bit-part player this season but he has made five appearances in the Champions League. 

39. Iceland - Arnór Sigurdsson (£6.3m)

The 20-year-old midfielder did enough in Iceland to earn a move to CSKA Moscow, where he's scored seven goals in 34 games. 

38. Russia - Fedor Chalov (£14.4m)

The 21-year-old has been in CSKA Moscow's senior team for four years already and finally earned a call-up to  the Russian national side last year. 

37. Romania - Florinel Coman (£4.95m)

Coman has been described as the 'Romanian Kylian Mbappe' - so he should probably be worth a bit more than £4.95m. 

36. Northern Ireland - Ethan Galbraith (£900,000)

Manchester United snapped the young midfielder up from Northern Ireland when he was an unknown entity - that's worked out rather well for them in the past...

35. Algeria - Hicham Boudaoui (£1.08m)

The Algeria international joined Nice last year but is yet to play a Ligue 1 game. 

34. Republic of Ireland - Aaron Connolly (£4.05m)

The Brighton forward had a brilliant full debut against Tottenham, scoring a brace in a 3-0 win earlier this season. They are his only Premier League goals to date, though. 

33. Iran - Younes Delfi (£720,000)

The 19-year-old has made his way to Europe and has become the youngest ever Iranian to play in Belgium. 

32. Slovakia - Robert Bozenik (£1.8m)

The 20-year-old earned a January move to Feyenoord where he's hit the ground running, scoring twice in his first three appearances. 

31. Nigeria - Samuel Chukwueze (£27.m)

The Villarreal winger was named as one of UEFA's '50 to watch' for the future this season. He's also in possession of a bronze medal from the AFCON. 

30. Serbia - Strahinja Pavlovic (£7.2m)

Monaco signed the centre-back in January but loaned him straight back to Partizan Belgrade, so we won't be seeing him in the top European leagues just yet. 

29. Turkey - Ozan Kabak (£19.8m)

The 19-year-old has already played for three different clubs but is currently with Schalke. 

28. Japan - Takefusa Kubo (£13.5m)

Naturally, that move to Real Madrid has propelled him into the spotlight though he's currently on loan at Mallorca. Zinedine Zidane did give him his chances in pre-season so it remains to be seen if he has a long-term future at the Bernabeu. 

27. Tunisia - Malek Baayou (£630,000)

The 20-year-old landed a new contract last season and also earned his first call-up to his national side. 

26. Austria - Hannes Wolf (£10.8m)

Southampton full-back Kevin Danso is Austria's next most expensive youngster, but he's just pipped by Leipzig midfielder Wolf. Not to be confused with the Genk manager, who goes by the same name. 

25. Venezuela - Jan Hurtado (£6.3m)

The forward has only scored once since joining Boca Juniors, hence why he's also found opportunities hard to come by for Venezuela. 

24. Ukraine - Vitaliy Mykolenko (£9m)

The Dynamo Kyiv centre-back has established himself in the first team, where you might have spotted him in the Europa League. 

23. Wales - Ethan Ampadu (£9m)

The Chelsea loanee has followed many other British youngsters on the development path to Germany, where he's currently playing for RB Leipzig - with a new look. 

22. USA - Christian Pulisic (£54m)

The poster boy of the USA team, it seems Pulisic has been around for years having already established himself at Dortmund and now Chelsea. 

21. Peru - Fernando Pacheco (£675,000)

The winger has just made his move to Fluminense where he will be tasked with breaking into the first team. 

20. Senegal - Ismaila Sarr (£24.3m)

On his day, Sarr has been impressive for Watford, but he's also been guilty of some horror misses this season. At any rate, the Hornets could lose him if they don't beat the drop. 

19. Poland -  Sebastian Szymanski (£5.4m)

The midfielder just missed out on the 2018 World Cup after being named in Poland's preliminary squad. 

18. Chile - Javier Altamirano (£675,000) 

We're not experts on Chilean football but our guess is that he's had a better couple of years than Alexis Sanchez. 

17. Sweden - Dejan Kulusevski (£31.5m) 

The 19-year-old has twice been loaned out to Parma, currently having been shipped out by his parent club Juventus. 

16. Denmark - Jacob Bruun Larsen (£10.8m)

The winger struggled to break into Borussia Dortmund's first team and after a loan spell at Stuttgart, joined Hoffenheim in January. 

15. Germany - Kai Havertz (£81m)

Havertz has been such a hit in the Bundesliga he's one of the few targets of whom it's reckoned he could break his way into Liverpool's attack. The Reds are even willing to pay upwards of £100m, according to reports. 

14. Netherlands - Matthijs de Ligt (£67.5m)

The Dutch centre-back had a tough start to life at Juventus. As they say, form is temporary, class is permanent and there's a reason De Ligt was at the centre of a tug-of-war between Europe's biggest clubs when he left Ajax. 

13. Italy - Gianluigi Donnarumma (£49.5m)

Some would say a safe pair of hands like Donnarumma's are priceless. Remarkably, he has stayed at AC Milan so far despite Mino Raiola's best attempts. 

12. Switzerland - Ruben Vargas (£7.2m)

The Augsburg winger made his debut for Switzerland in their recent Euro 2020 qualifying  campaign and could yet make it to the tournament proper. 

11. Mexico - Diego Lainez (£9m)

The Real Betis winger looks a thoroughly exciting prospect. Rapid and with an eye for goal, it's a pity his progress has now been interrupted by appendicitis. 

10. Colombia - Luis Sinisterra (£8.1m)

The forward has been shining in bursts for Feyenoord. 

9. Argentina - Exequiel Palacios (£22.5m)

Palacios has so often been in the headlines for... well, some rather questionable reasons. Having just arrived at Bayer Leverkusen, we should be hearing a lot more of him for what he does on the pitch. A real talent. 

8. Spain - Ansu Fati and Ferran Torres (£36m)

For a player to have a €100m buyout clause by the age of 16, it was immediately clear Fati is going to go onto big things. It's just as well he stayed at Barca, rather than joining West Ham as nearly happened in the summer. Then we have Valencia's Ferran Torres, who has been tipped as the next big breakout star like Marco Asensio in La Liga. 

7. Portugal - Joao Felix (£90m)

Felix has found it hard to adapt at Atletico Madrid since making his big summer move. The Portuguese forward has really struggled with becoming the second most expensive teenager of all time after Mbappe. 

6. Croatia - Josip Brekalo (£13.5m)

Things haven't always been easy for him at Wolfsburg despite his versatility, which sees him play on both flanks and up front from time to time. 

5. Uruguay - Federico Valverde (£45m)

That might be his official value, but the Real Madrid youngster has a massive release clause of £640m. 

4. England - Jadon Sancho (£108m)

Expect to hear a lot more about that price tag in the coming months as the forward is likely to return to the Premier League.

3. Brazil - Vinicius Jr. (£45m)

Too much was expected of the teenage winger when he first arrived at Real Madrid. There have been talks of an early exit but the Brazilian plans to stay and impress Zidane. 

2. France - Kylian Mbappe (£180m)

The world's most expensive youngster, though that is no surprise whatsoever. If anything, at today's prices £180m is peanuts for the potential heir to Lionel Messi's throne. 

1. Belgium - Zinho Vanheusden (£16.2m)

The Standard Liege centre-back might not be the biggest name right now throughout Europe, but just look at the previous generation of Belgians. The Red Devils system is geared towards developing young talent and it's turned the national side into the number one ranked team in the world. 

Market values can be misleading, but we may have a glimpse into the stars of the future here. 

Whether it's Haaland or Mbappe, Sancho or Havertz, it's already becoming apparent who is going to be dominating over the course of the next decade.