Marco Reus says he is "on the road to recovery" after coming through successful cruciate ligament surgery.
The 28-year-old Borussia Dortmund midfielder played 23 times this season before injuring himself in the club's DFB-Pokal final victory over Eintracht Frankfurt.
He had earlier missed a part of the season through injury, having missed the 2014 World Cup with an ankle problem.
But after coming out of surgery this week, the former Rot Weiss Ahlen and VfL Borussia Mönchengladbach man said he will do what it takes to get back to action for Dortmund and Germany.
He posted on his Facebook page: "The surgery went fine and I'm already on the road to recovery.
"Now there is a relatively long rehab phase which I will follow. I will tackle this with everything I have and I'll do anything to be back soon on the pitch.
"I always come back strong and this will also be the case this time.
"We have a lot to do with our new BVB coach Peter Bosz and with the national team at the World Cup in Russia. It's my goal, in the new year, to be in top shape for the crucial stage of the upcoming season, fully able to contribute again.
"Thank you for your support, it means a lot to me and gives me strength for the difficult time that now lies ahead.
"[Germany coach] Jogi Low and the boys, I wish you great success for the game [against San Marino in World Cup qualifying] and the Confederations Cup."
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