Sancho, who is currently 25 years old, was loaned out to Manchester United by Chelsea. Despite having a £25 million obligation to buy him in his loan contract, Chelsea decided to send him back to United.
As a result, Sancho now finds himself unwanted by two clubs and seems to have no clear future at Old Trafford under the management of Ruben Amorim.
According to reports, Dortmund is willing to offer Sancho a way out and bring him back to Germany permanently this summer.
Manchester United currently values Sancho at around £30 million, while several clubs from the Saudi Pro League are also interested in his services.
Meanwhile, Dortmund's current left-winger, Jamie Gittens, is expected to leave the club and join Chelsea. However, the two clubs have not yet reached an agreement ahead of the FIFA Club World Cup.