Union Berlin is one of several clubs interested in Jens Hjertø-Dahl, a 20-year-old Norwegian central midfielder for Tromso. It is reported that he is one of the most sought-after players in Europe. Other interested clubs include Lazio in Serie A, Glasgow Rangers, Liverpool, and Everton. Bournemouth's proposal to his current club was more significant than the one from Besiktas. However, it is reported that the player wishes to join Besiktas and has paused consideration of other options while he awaits the final details of an agreement between the two clubs. Hjertø-Dahl has been capped six times for Norway's U21 team. His contract with Tromsø is until the end of 2027, and his current market value, according to Transfermarkt, is €7.00m. It was reported in January 2026 that Besiktas had made a formal offer of €7 million. At that time, his valuation was cited as being in a range of approximately €4.1 million to €7.1 million.