The wing-back suffered the problem late on against West Ham and was substituted for the returning Gary Doherty with five minutes left.
Germany take on the World Cup favourites in Stuttgart on Wednesday.
"Christian has a slight ankle problem," reported boss Glenn Hoddle. "I don't think it's anything too serious.
"Whether he can go on international duty, I don't know. He'll go to Germany and be looked at."
Christian Ziege is a doubt for Germany's high-profile friendly against Argentina after picking up an ankle injury on Saturday.