Borussia Dortmund have confirmed that Henrikh Mkhitaryan will be sidelined for the next "six weeks" with a thigh problem.

The attacking midfielder suffered the injury during his side's 1-0 defeat at the hands of Hertha Berlin in the Bundesliga on Saturday.

A subsequent scan on the problem has revealed the extent of the damage, which is expected to keep the Armenian out of action until February next year.

The 25-year-old has made 18 appearances for Dortmund in all competitions this season, in which he has scored one goal.