Bundesliga leader Bayern Munich will be without defensive midfielder Javier Martinez and winger Franck Ribery for Sunday's (3.30am Monday AEDT) match against Bayer Leverkusen.
Ribery still has muscular problems in his right thigh, while Martinez is carrying a groin injury ahead of the match against Leverkusen at Munich's Allianz Arena with Bayern chasing its ninth straight league win.
There was some good news for the host as fragile Dutch winger Arjen Robben, who sustained a hamstring injury at the end of September, has trained for the past few days with the team.
"It is very positive that he is free of pain again," said Bayern coach Jupp Heynckes, who added Robben could be included in the matchday squad, as Leverkusen looks for its first win in Munich for 23 years.
In mid-week, Robben admitted that a run of constant injuries in recent years had left him considering retirement, before back tracking and insisting he is eager to return for Munich.
"It makes no sense to return quickly, I have to be really fit again," he said.
Bayern can expect to also welcome back Germany striker Mario Gomez soon after he trained with the squad on Saturday, 11 weeks after an ankle operation.
"Experience shows that it is a process of two or three weeks before he is back in the squad. He can barely wait," said Heynckes.
Hannover has announced the signing of midfielder