Representatives from at least four foreign clubs, including FC Porto, FC Koeln, Bologna, and Bayern Munich, attended the Jagiellonia Białystok versus Rayo Vallecano match. They were observing 17-year-old Polish winger Oskar Pietuszewski. The German champions have been monitoring the player for some time and had previously attended Jagiellonia's games. Clubs from Spain and England are also observing Pietuszewski, who joined his current club in July 2024. This season, he has 3 goals and 2 assists in 16 Ekstraklasa appearances and has also scored 4 goals in 6 games for the Poland U21 team. His contract is valid until June 2027, and his market value is estimated at €12.00m by Transfermarkt.