With the signing of 17-year-old starlet Alexander Isak, Borussia Dortmund have added yet another projected world beater to their squad as the Bundesliga team becomes even more renowned for signing and developing young talent under the watchful eye of sporting director Michael Zorc.
With a record 463 appearances for Dortmund, Zorc was already a legend in western Germany, but he has cemented that status by finding and acquiring the best up-and-comers along with general manager Hans-Joachim Watzke.
Despite fierce competition with Real Madrid, Zorc and his team were able to convince Isak that the Westfalenstadion was the best place for him to develop his talents.
"Many of Europe's big clubs wanted to sign him and we're glad that he has chosen us," the director said of the acquisition.
"He is a talented and evolving forward who we think has great potential."
Yet Isak is not alone if choosing Dortmund as the best place to refine his talents, as 19-year-old Ousmane Dembele was also convinced to join last summer, as were 19-year-old Emre Mor, 20-year-old Mikel Merino and 23-year-old Raphael Guerreiro.
They follow in the footsteps of a number of other aces to have been signed during the Zorc era, with the likes of Robert Lewandowski and Mats Hummels becoming superstars in yellow, before moving on.
Although the Polish striker left for free, most of the players to have moved on have done so with a considerable mark-up, which has allowed the director to bring in nearly 240 million euros in transfer fees in just the past five years.
Pierre-Emerick Aubameyang may have been brought in at the slightly older age of 24, but he too is set to command a momentous fee if he leaves this summer, which would give Zorc even more funds with which to find the next crop of young superstars.

The big transfers made by Dortmund under Zorc:

1. Alexander Isak (17 years old): Bought from AIK Solna for 9m euros in 2017

2. Ousmane Dembele (19 years old): Bought from Rennes for 15m euros in 2016

3. Emre Mor (19 years old): Bought from Nordsjaelland for 10m euros in 2016

4. Mikel Merino (19 years old): Bought from Osasuna for 4m euros in 2016

5. Raphael Guerreiro (22 years old): Bought from Lorient for 12m euros in 2016

6. Julian Weigl (19 years old): Bought from 1860 Munich for 2.5m euros in 2015

7. Christian Pulisic (16 years old): Signed from Pennsylvania Classics in 2015

8. Matthias Ginter (20 years old): Bought from Freiburg for 10m euros in 2014

9. Ilkay Gundogan (20 years old): Bought from Nuremberg for 5.5m euros in 2011 and sold to Manchester City for 27m

10. Robert Lewandowski (21 years old): Bought from Poznan for 4.5 euros in 2010 and moved to Bayern Munich on a free transfer

11. Shinji Kagawa (21 years old): Signed for free from Cerezo Osaka in 2010 and sold to Manchester United for 22. Repurchased for 8m euros in 2014

12. Mats Hummels (20 years old): Bought from Bayern Munich for 4m euros in 2009 and sold to Bayern Munich for 35m

13. Neven Subotic (19 years old). Bought from Mainz for 4.5m euros in 2008

14. Jakub Blaszczykowski (21 years old): Bought from Wisla for 3m euros in 2007 and sold for 10m