Bremen's Arnautovic injures knee

Werder Bremen says striker Marko Arnautovic will be out for at least six weeks after damaging ligaments in his right knee while playing with his dog in the garden.

The Bundesliga club says the Austria international's foot got stuck in grass and he twisted his knee.

Bremen's coach Thomas Schaaf says the injury is ''annoying.''

Arnautovic has scored six goals in 17 matches this season.