Bayern Munich coach Louis van Gaal is fully focused on tomorrow's Bundesliga clash with Hannover in spite of the impending UEFA Champions League semi-final against Olympique Lyon.

Bayern need to defend their two-point advantage over Schalke at the top of the table before considering what they must do to reach their first UEFA Champions League final since 2001, according to the Dutch coach.

"Tomorrow, we have a home game against Hannover, not Lyon," he said. "We have got to talk about Hannover and beat Hannover."

Nevertheless, even he admitted he may have to make a few alterations to his side in view of next Wednesday. Defender Holger Badstuber is showing signs of tiredness so Diego Contento or David Alaba could replace him at left-back.

Furthermore, Arjen Robben has been receiving his usual dose of treatment this week and may not be risked tomorrow, at least not from the beginning.

Although Hannover come into the game as rank outsiders, they showed last week by defeating second-placed Schalke that they must not be taken lightly. They still need points to get out of the bottom three and Hannover coach Mirko Slomka expects them to build on last week's success.

"That was important, very important for the league table and our self-confidence," Slomka said.

"My team showed to the fans and to themselves what they are capable of when every player goes to the limit and give it their best," said the Hannover boss.

Hannover are without their two injured strikers Elson and Arouna Kone and this could give former Bayern forward Jan Schlaudraff a rare chance in the starting lineup.