Kacper Trelowski was on loan to Śląsk Wrocław from Raków Częstochowa in 2023 to gain more match experience. Despite the opportunity to purchase him permanently, Śląsk Wrocław could not afford the transfer fee, resulting in Trelowski returning to Raków Częstochowa. Currently, Transfermarkt estimates his market worth at 3.50 million euros.