Chelsea expressed interest in Rav van den Berg, a 21-year-old Dutch centre-back, but their intention to loan him out immediately was not appealing to him, leading to the transfer not materializing. Instead, van den Berg opted to join 1. FC Köln, where he signed a five-year contract. The transfer fee, including bonuses, could potentially reach 10 million euros. Köln's Sport-Boss Thomas Kessler was instrumental in securing the young defender, who was also targeted by several other clubs, including those from Rotterdam and Russia. Van den Berg conveyed his excitement about joining Köln, highlighting the club's welcoming atmosphere and his eagerness to contribute to the team. According to Transfermarkt, his market value is currently estimated at €4.50 million.