Bundesliga club Borussia Dortmund will be without the services of Marcel Schmelzer for a long period of time.

The left-back has been experiencing knee problems following an accident that took place in the final training session before the match in Leipzig towards the end of the season. More detailed examinations subsequently revealed that an operation was necessary and that a break of several months would be required to undergo rehab. BVB are expecting Marcel Schmelzer to be back before the turn of the year.