Netherlands-Cameroon defender Steven van der Sloot of ADO Den Haag is being linked with a summer switch to Bundesliga side 1.FC Köln, with the 23-year-old right-back’s future under scrutiny amid growing transfer speculation in Germany and the Netherlands.
Reports compiled on 2 June 2026 suggest Köln are monitoring the full-back, who is valued at around €650,000 on Transfermarkt, as they assess options to reinforce the right side of their defence. The probability of the move remains unclear – listed only as “?” – but the interest raises questions over whether Van der Sloot could depart The Hague in the coming window.
Van der Sloot, born on 6 July 2002 in Limbe and holding both Dutch and Cameroonian nationality, has been operating primarily as a defender at right-back for ADO Den Haag in the Keuken Kampioen Divisie. Standing at 1.75m and a right-footed specialist, he wears the No 2 shirt for the Dutch club and is viewed as a modern full-back capable of contributing both defensively and in build-up play.
The speculation comes against the backdrop of uncertainty around his contractual situation. The latest registration data lists no fixed contract expiry date at ADO Den Haag, leaving open the possibility that he could move on relatively cheaply, or even edge towards free-agent status should his deal be close to its end or contain short-term clauses. That flexibility is understood to be part of what makes him attractive to potential suitors such as Köln.
Köln’s interest is framed within their broader search for value in the market, with Van der Sloot’s €650k valuation placing him in a bracket where a low-risk deal could still carry significant upside if he adapts quickly to the Bundesliga. For a club looking to refresh its defensive options without major outlay, a player of his age profile and dual-national background ticks several boxes.
Van der Sloot has been a regular presence for ADO Den Haag in the Dutch second tier, featuring as a right-back in recent league fixtures. In a recent league outing for ADO Den Haag in the Keuken Kampioen Divisie – a tight contest against domestic opposition that finished level on the scoreboard – he completed the 90 minutes on the right side of defence, helping to limit chances down his flank and underlining the consistency that has drawn scouts’ attention. That performance, coming just days before the latest round of transfer talk surfaced on 2 June 2026, has been cited in local coverage as further evidence of his steady development.
The defender’s versatility at the back, combined with his age and room for progression, is expected to appeal to Köln’s recruitment team as they look for players who can be moulded into long-term assets. While no formal fee or structure has been reported, the modest market valuation suggests that any deal, whether permanent or incentivised with add-ons, would be far from the upper end of the Bundesliga spending scale.
For now, Van der Sloot remains an ADO Den Haag player, competing in the Keuken Kampioen Divisie and continuing his development in Dutch football. But with monitoring from a top-flight German club already under way and his contractual horizon not clearly defined in public sources, the coming weeks could prove decisive in determining whether he stays in The Hague, tests the market as a potential free agent in the near future, or makes the jump directly into the Bundesliga.
If a move to 1.FC Köln does materialise, it would mark the most significant step of Steven van der Sloot’s career to date, offering him a platform at a higher level and the chance to enhance his reputation as a dual-national right-back capable of making his mark in one of Europe’s leading leagues.
