The 25-year-old returned to Man United after Chelsea paid £5 million to get out of their £25 million obligation to buy the winger.
Sancho had a decent season at Stamford Bridge, scoring five goals and providing eight assists in his 41 games, but was unable to agree personal terms.
As a result, he is a member of Ruben Amorim’s famous ‘bomb squad’ and looks set to finally leave the club permanently this summer.
According to Sport Bild, several members of Dortmund’s current squad are pushing the hierarchy to bring Sancho back.
Not everyone is convinced, however, with concerns over his recent form been raised behind the scenes at the German club.
