Winger Kwadwo Baah has been ruled out of action for one month.
The youngster who is on loan at Dusseldorf from Watford suffered a thigh strain at training on Tuesday and he will now be out for four weeks.
Baah, 22, has played just four games for the second team of Dusseldorf in the Regionalliga this season and has once been on the bench of the senior team.
He was on the verge of canceling his loan deal and moving back to Watford in January but he later chose to stay.
