Borussia Dortmund manager Jurgen Klopp has admitted that Robert Lewandowski will be leaving the club when his contract expires at the end of next season.

Klopp says the striker will leave on a free transfer to arch-rivals Bayern Munich.

A move was expected to happen this summer but Dortmund opted to keep the Polish striker on their books for the final year of his contract as they had already lost young star Mario Gotze to Bavaria.