Arsenal have reportedly shown interest in Oskar Pietuszewski, a 17-year-old Polish winger, with Chelsea and Manchester City also said to be interested in the teenager. His current club, Porto, could potentially secure a large return on their investment, as the player has a €60 million release clause. Pietuszewski joined Porto in January 2026 for a reported €8 million plus €2 million in bonuses, and his former club, Jagiellonia, is entitled to ten percent of that release clause amount. The winger's contract expires in May 2029, and he has scored 4 goals in 6 caps for Poland's U21 team. This season, he has a combined 5 goals and 4 assists in 24 league appearances for Jagiellonia and Porto. His current market value is listed by Transfermarkt as €12.00m.