Sami Khedira says his comeback is on track after playing the first half of Germany's shock defeat to Slovakia on Sunday.
The 29-year-old missed Juventus' Coppa Italia final win over AC Milan with a calf injury, but returned to captain the world champions in Augsburg for his first appearance in four weeks.
"My fitness is good," he said. "But the calf is always dangerous - you have to be careful.
"Overall, however, everything is on schedule."
Khedira departed against Slovakia with the score sitting at 2-1 to the visitors, who eventually ran out 3-1 winners, but he blamed the adjustment to a new formation for Germany's defensive issues.
Head coach Joachim Low trialled a three-man defence and Khedira insisted: "We have not done well due to the formation.
"We knew that there might be some co-ordination problems."
