Schalke and Germany midfielder Leon Goretzka will be out of action for approximately one week after sustaining a thigh strain in training.

The 22-year-old was taking part in his first session since returning from an extended break following his title-winning exploits with Germany at the FIFA Confederations Cup in Russia in June.

Goretzka will stay with the squad at the club's training camp in Mittsill, Austria, to receive treatment.

Watch: Goretzka clicking into top gear

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