Gundogan has been ruled out for the rest of the season after dislocating his knee during training. Dortmund confirmed the news on their official twitter page.
Gundogan’s fitness has been under the spotlight after the 25-year-old missed a year of football due to a back injury. The injury comes off the back of another injury Gundogan picked up in March which kept him out for a month.
Mesut Ozil has won two FA Cup trophies at Arsenal but has yet to win the Premier League. The former Real Madrid star will not be able to add to his silverware collection this season.
The Germany international has recorded 18 assists and with two games to go still has a chance of equalling the Premier League record of 20 set by Thierry Henry.
Arsenal take on Manchester City this weekend in the Premier League as they look to secure a third place finish.