Reus has been cruelly dogged by injury in recent years, missing the 2014 World Cup and Euro 2016 as a result of fitness problems, while he is now set to be sidelined for anything from four to six months after suffering knee ligament damage in the recent DFB Pokal final.
With the 28-year-old star potentially out of action until November, Bild is now reporting that Dortmund are close to completing a deal for Freiburg winger Maximilian Philipp.
The proposed deal for Philipp is said to be €20m, with the talented youngster granted a temporary leave of absence from Germany's training camp ahead of the upcoming Under-21 European Championship in Poland.
At the age of 23, Philipp remains eligible for the junior tournament by virtue of having been 21 or under at the start of the year in which the qualifying process began (2015).
He scored nine goals and registered two assists in the Bundesliga in 2016/17 to help newly promoted Freiburg to a strong 7th place finish on their return to the top flight.
Dortmund are making a strong start to the summer after already confirming this week the signing of highly rated Paris Saint-Germain youngster Dan-Axel Zagadou.
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