Borussia Dortmund youngster Jadon Sancho is expected to be out for "several weeks" after suffering ankle ligament damage in Friday's 3-2 win at Cologne.
Sancho featured as a substitute in Dortmund's 3-2 victory at the RheinEnergie Stadion, replacing Christian Pulisic with 18 minutes to go and playing a key part in Andre Schurrle's winner, brilliantly springing the counterattack which brought about the goal.
The win moved Dortmund into fourth in the Bundesliga table after Matchday 21.
But the tricky winger appeared to turn his ankle in the turf late on and had to make way, leaving Dortmund with 10 men for the final moments due to already making their permitted three changes.