Erling Haaland will be out for "a couple of weeks" with a hip muscle injury.

Haaland returned only last week from another muscle injury, scoring twice in a 3-1 win over Mainz before playing the whole game in Dortmund's 4-0 loss to Ajax in the Champions League on Tuesday.

"Erling will be out, we'll be without him for a couple of weeks even," Marco Rose told a news conference.

"He has a hip flexor injury which simply doesn't make it possible for him to play. It's the same thigh, but another location."