Germany will not take any risks with Torsten Frings' fitness and will make a late decision on whether the midfielder can face Portugal.
Frings sustained a fractured rib during Germany's 1-0 win over Austria on Monday night, although he was initially unaware of the injury.
He is battling to be fit for Thursday's Euro 2008 quarter-final against Portugal in Basel and he will be given every chance to make the starting line-up.
"We won't decide until just before we have to hand in the team sheet," said Germany's team manager Oliver Bierhoff.
"If the medics say there is even a slight chance of a serious injury then we won't risk it.
"But I have to give credit to him. He's eager to play."