Borussia Monchengladbach coach Lucien Favre has admitted that he could make changes to his side that was beaten 3-1 on the opening day by Bayern Munich.
Favre said that he will speak to the returning international players before settling on his XI for the clash with Hannover.
"I won't make any decisions until I've spoken to the players who were away on international duty," Bundesliga.com quotes Favre as saying.
"This is a different game compared to the one in Munich last week. Hannover are a very compact unit. It's very difficult to find a gap through the middle."
Gladbach finished eighth last season.