Tomas Rosicky has revealed that he will miss the Czech Republic's training session on Friday evening as he tries to recover from an Achilles injury.
The Arsenal midfielder is a doubt for his country's final Group A encounter with Poland on Saturday after picking up the problem in the 2-1 win against Greece earlier this week.
"I will not train tonight (Friday) but I will have additional treatment," the 31-year-old told reporters.
"I feel better, though, and we will see tomorrow morning how I feel. Then we will make the decision, depending on how it is."
The Czechs currently sit second in Group A behind leaders Russia.
