# Borussia Dortmund transfer window activity

> Live situation record from CLSTR: https://clstr.news/situations/borussia-dortmund-transfer-window-activity
> Updated: 2026-09-05T06:27:43.000Z. Sources: 14. Developments: 2.

Borussia Dortmund has concluded a significant summer transfer window led by new sporting director Ole Book. The club invested approximately 110 million euros in seven new signings, including Konstantinos Karetsas, Giannis Konstantelias, Joey Veerman, Joane Gadou, and Ethan Nwaneri. This recruitment strategy reportedly resulted in wage savings of roughly 20 million euros.

Club management, including Managing Director Lars Ricken, praised the strategy, stating that signings were made with conviction based on careful observation. The acquisitions aim to address previous weaknesses in the defensive line and central midfield. While the club secured Ethan Nwaneri on deadline day following a season-ending injury to Konstantelias, head coach Niko Kovac expressed high satisfaction with the efficiency of the window's acquisitions.

## Timeline

### 2026-09-05: Borussia Dortmund management praises Ole Book's transfer strategy

Borussia Dortmund's management has praised sporting director Ole Book for a strategic summer transfer window aimed at strengthening the squad's defense and midfield.

2 sources. https://clstr.news/cluster/borussia-dortmund-management-praises-ole-books-transfer-strategy

### 2026-09-02: Borussia Dortmund completes major transfer window under Ole Book

Borussia Dortmund's sporting director Ole Book has completed a major transfer window, spending 110 million euros on new talent while Fabio Silva remains at the club.

13 sources. https://clstr.news/cluster/dortmund-school-faces-shortage-as-admission-rate-drops-below-50

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Cite as: Borussia Dortmund transfer window activity. CLSTR, https://clstr.news/situations/borussia-dortmund-transfer-window-activity