Reus' current contract, running until June 2019, has been extended for four years to 2023, reports Xinhua news agency.
"We are delighted that Marco has decided to extend his contract prematurely and for a very long time although the best clubs in the world have courted him repeatedly," Dortmund's CEO Hans-Joachim Watzke said on Friday.
"Since 2012 I wear the jersey of Dortmund. I am happy and proud to announce today that I will continue to wear it. Dortmund is my home and the BVB my club. With the deepest conviction I would like to set a clear signal with this signature for the future," Reus told the club's official homepage.
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