Germany have major midfield worries ahead of their crucial final clash with Czech Republic, after Dietmar Hamann, Bernd Schneider and Bastian Schweinsteiger all missed training.
Liverpool's Hamann has a sore thigh and was restricted to just cycling at the team's training complex.
Leverkusen midfielder Schneider, who was substituted for Schweinsteiger against Latvia, complained about a pain in his Achilles tendon and has received a number of injections.
"Training was impossible, but I hope that I'll get fit for Wednesday," said Schneider with regard to Germany's decisive final Group D clash against the already-qualified Czechs.
Schneider's injury would not have been too much of a worry for Voller, if it were not for the news that his replacement Schweinsteiger has also picked up a knock.
Schweinsteiger has suffered a bruised calf and is a doubt for the game with the Czechs on Wednesday - but assistant coach Michael Skibbe is confident all three will make the game.
"At the moment it looks like all three will be able to play," said Skibbe.
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