Borussia Dortmund have approached SV Werder Bremen about German-Japanese goalkeeper Mio Backhaus. The approach is reportedly part of a search for a potential rival for Gregor Kobel, their first-choice keeper. A report from Deichstube noted this approach. That report did not clarify how serious Dortmund's interest is. Backhaus is 22 years old and is under contract with Bremen. He has 5 caps for Germany's U21 team and has also been linked with clubs such as SC Freiburg and Newcastle United. His current Transfermarkt market value is €12.00m. Additionally, a contract extension signed in June 2025 reportedly included a high release clause.