Ghanaian defender Marcel Appiah has been ruled out until further notice after picking a knee injury.
Appiah,31 was injured during VFR Aalen’s pre-season friendly defeat to Augsburg II.
The Ghanaian international had to be replaced early in the game and was later diagnosed with a tear in his knee ligament.
He joined VFR Aalen last year in the summer on a one-year contract but was handed an additional two-year contract extension following his impressive campaign at the club.
Last season he made 22 appearances in all competitions and scored one goal.