Neuer, 31, suffered a third foot fracture in six months on Monday and is likely to remain on the sidelines for the rest of the year after surgery.
Sancho, 17, joined Dortmund from Manchester City for a reported €7 million on the final day of the summer transfer window.
The German FA (DFB) fined the Augsburg captain €20,000 for unsporting conduct and imposed a one-game ban.
Reported Chelsea target Rafinha has told Sport Bild he received offers from England and Spain this summer and indicated he could be open to leaving.
From Manchester City's John Stones to Bilbao's Aymeric Laporte, there are a host of young and talented centre-backs. Here's a look at the top 10.
Josh Sargent recently signed with Bundesliga club Werder Bremen at only 17. Taylor Twellman dives into his reasoning why.