Olympique Lyonnais may benefit from an unexpected revenue stream through the sale of Castello Lukeba to FC Barcelona. The club had retained a percentage on any potential profit for the defender. Matthieu Louis-Jean, technical director of Olympique Lyonnais, confirmed the need to sell players to balance the books and fund recruitment. Any revenue would be welcome in this context. FC Barcelona has begun talks with RB Leipzig and Castello Lukeba's entourage. The Spanish champions are looking for a defender who can excel in counter-attacks and has the athletic qualities to cover the spaces left by Hansi Flick's high defensive line. The profile matches that of the former Lyon player, who is contracted until 2029. It remains to be seen if Barcelona can afford to sign the international tricolor, whose release clause is set at 80 million euros. In April, Sky Sport Germany reported that RB Leipzig could sell their defender for a sum between 65 and 70 million euros, which would be a significant influx of cash for Olympique Lyonnais.