Bundesliga top scorer Mario Gomez and central defender Daniel van Buyten are doubtful for Bayern Munich's league game at Schalke 04 on Sunday after being injured in their Champions League 2-0 win over Villarreal on Wednesday.
Coach Jupp Heynckes said while Gomez's groin injury and Van Buyten's heel problem were not serious, they could be bad enough to rule them out for a few days.
"We hope that they can train on Saturday. But we will need to wait and obviously there is a question mark for Sunday," he told the club website.
"It was a hard clash but this happens in football," Favre told reporters. "But I am optimistic he can play on Saturday despite the injury."
Bah, who had joined in August from Finland's HJK Helsinki, underwent surgery on Wednesday with doctors ruling him out for several months.
"This is extremely bitter for Dawda. We had imagined his start at Augsburg very differently," said club CEO Andreas Rettig on the club website.
