Fortuna Düsseldorf have completed the signing of attacking midfielder Kilian Sauck from Borussia Mönchengladbach II, sealing a permanent move that will take the 18-year-old into the 2. Bundesliga. The transfer was finalised on 2026-02-02, with Sauck’s new contract at Fortuna running until 2026-06-30, marking the next step in the German-Cape Verdean’s rapid rise through the country’s football pyramid.
The deal sees Sauck leave Mönchengladbach’s reserve side, which competes in the Regionalliga West, for a first-team environment at Düsseldorf. His current market value is listed at €75k, and while the official transfer fee remains undisclosed and is recorded as “?”, the move represents a clear upgrade in competitive level and club profile for the teenager.
Born in Hamburg and standing 1.74m tall, Sauck arrives as a specialist attacking midfielder, comfortable operating in the central spaces behind the striker. Both-footed and still only 18, he offers Fortuna a technically versatile option between midfield and attack, with the potential to grow in value and responsibility over the course of his deal.
The switch to Fortuna Düsseldorf continues a career spent entirely in German football to date. Sauck came through the youth ranks at HSV Barmbek-Uhlenhorst before moving to FC St. Pauli’s youth setup. From there, he joined Borussia Mönchengladbach Youth, progressing step by step through the club’s age groups: Youth to U17, then U19, and finally Borussia Mönchengladbach II. Each internal promotion reflected his steady development and consistent performances in the academy system.
At Mönchengladbach II, Sauck’s displays in the Regionalliga West helped push his market value from €50k to €75k over the course of 2025, underlining how his potential has been tracked closely at senior level. His dual nationality with Germany and Cape Verde also adds an international dimension to his profile, with future national-team eligibility for either country remaining open on the basis of the current data.
This transfer ensures Sauck will not become a free agent; instead, he commits his immediate future to Fortuna Düsseldorf and to competing in the 2. Bundesliga. For Düsseldorf, the move is a relatively low-risk investment in a young creative midfielder who already has experience in a demanding regional league and a long grounding in elite German academies.
While the precise financial terms of the transfer are not disclosed, Fortuna’s decision to secure Sauck on a fixed contract until 2026-06-30 signals a belief that his trajectory is still on the rise. If he adapts quickly to the higher tempo and tactical demands of the 2. Bundesliga, this step from Mönchengladbach II to Düsseldorf could become a pivotal moment in shaping his career path and overall reputation in professional football.
