The young Dutchman has spent this season on loan in the Championship with Coventry City.
BILD says BVB are in the market for a new left-back and Maatsen fits the bill.
The 20-year-old Maatsen is under contract with Chelsea until 2024.
BVB are keen on Ramy Bensebaini (27) from Borussia Mönchengladbach, though Maatsen has emerged as a more affordable alternative.
Source: Tribalfootball
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