Sheffield United are interested in Sarpsborg 08's 22-year-old Norwegian striker, Daniel Karlsbakk, who is also a top summer transfer target for fellow Championship side Middlesbrough. A summer transfer for the striker is considered unavoidable, and his Norwegian club wants a fee of approximately €8m - €10m (£7m - £9m). Both Championship clubs are reportedly willing to meet Sarpsborg's asking price. Karlsbakk joined Sarpsborg 08 in January 2025, has a contract until the end of 2028, and has scored 1 goal in 10 caps for the Norway U21 team. In February 2026, a transfer to Trabzonspor for a reported €9 million did not proceed at its final stage. His current Transfermarkt market value is €5.00m.