Genk, Belgium – Kos Karetsas, the 18-year-old midfielder for KRC Genk, has officially become the most valuable player in the history of the Jupiler Pro League, according to Transfermarkt. His estimated market value has surged to €35 million, surpassing previous record holders and solidifying his position as a highly sought-after talent in European football.
The remarkable rise in Karetsas’s value comes on the heels of a string of impressive performances for both Genk in the Belgian league and on the European stage. Transfermarkt data shows his value increased from €28 million, quickly establishing him as a standout player attracting attention from top clubs across the continent. This leap places him ahead of players like Joel Ordóñez of Club Brugge (€33 million) and Christos Tzolis (€30 million), also of Club Brugge.
Karetsas’s journey to the top hasn’t been without its twists. Born in Genk, Belgium, on November 19, 2007, to parents of Greek descent, he began his footballing career at As VV before joining KRC Genk’s youth academy in 2015. He briefly moved to RSC Anderlecht in 2020, but returned to Genk in January 2023, signing his first professional contract at the age of 15 despite interest from clubs like AFC Ajax and Manchester City. He made his official debut for Jong Genk, Genk’s reserve team, in Eerste Klasse B on August 13, 2023, immediately making an impact with an assist.
The young midfielder’s ascent isn’t just a Genk story. it reflects a broader trend of rising valuations within the Jupiler Pro League. Aleksandar Stankovic (Club Brugge) and Nathan De Cat (RSC Anderlecht) have also seen significant increases in their market values, now estimated at €25 million each. This surge in player worth highlights the growing competitiveness and talent pool within Belgian football.
Beyond Karetsas, the top 20 most valuable players in the Jupiler Pro League, as of March 13, 2026, includes a mix of established stars and emerging talents. Joel Ordóñez (€33 million) and Christos Tzolis (€30 million) of Club Brugge remain highly valued, although players like Raphael Onyedika (€23 million) and Anan Khalaili (€18 million) contribute to the league’s overall strength. The presence of several Genk and Club Brugge players in the top ranks underscores the dominance of these clubs in developing and attracting top talent.
Karetsas’s international career is also blossoming. He debuted for the Greek national team in 2025 and has quickly become a key player, representing his dual nationality with pride. As of January 31, 2026, he has represented Greece at the U-15, U-16, and U-17 levels, accumulating significant playing time and experience.
The increasing valuation of players like Karetsas and Ordóñez has sparked speculation about potential transfer moves. Reports suggest that several European powerhouses, including PSG, Inter Milan, Liverpool, and FC Barcelona, are closely monitoring Ordóñez’s situation at Club Brugge. Similarly, Karetsas’s performances are attracting interest from clubs in England, including Arsenal, according to recent reports.
The Limburg derby, a highly anticipated match between Genk and other regional rivals, provides a local context for Karetsas’s success. Recent data highlights the significance of this fixture, with figures like a 19-point gap between teams and an average attendance of 22,000 spectators demonstrating the passion and rivalry within the region. Karetsas’s contributions to Genk’s success in this derby and beyond are undoubtedly contributing to his growing reputation.
The current landscape of Belgian football, as highlighted by VoetbalPrimeur.be, shows that Club Brugge is also among the top clubs in terms of overall squad value, even exceeding that of renowned teams like Ajax, Feyenoord, and Galatasaray. This demonstrates the increasing financial strength and competitive edge of Belgian clubs.
Looking ahead, Karetsas is under contract with KRC Genk until June 30, 2029. However, with his market value continuing to rise, a summer transfer cannot be ruled out. His next appearance will be closely watched by scouts and fans alike, as he continues to cement his status as one of the most exciting young talents in European football. Genk fans will be hoping he can continue to deliver strong performances and potentially lead the club to further success.
The story of Kos Karetsas is more than just a tale of rising market value; it’s a testament to the power of youth development, the allure of Belgian football, and the potential for young players to achieve greatness on the European stage. His journey from the youth academies of Genk to the international spotlight is an inspiring one, and his future remains incredibly bright.
