Gundogan set for several months out after succesful knee operation

Berlin - Midfielder Ilkay Gundogan has undergone a successful knee operation, his club Borussia Dortmund announced Friday, with the German international expected to be out of action for several months.

The 25-year-old, who will miss this summer's European championships in France, dislocated his knee cap in training with Dortmund earlier this month.

His current Borussia contract expires in June 2017, but he has been linked with a transfer to Manchester City to work with incoming manager Pep Guardiola.