Former Liverpool striker Andriy Voronin fears for Ukraine chances if Andriy Shevchenko fails to make their clash with England.
The ex-Chelsea forward missed training with Ukraine yesterday.
Voronin said: "I don't know if Sheva will play but he has two days to be ready, so we hope he can.
"He is such an important player in every game for us.
"This is the biggest game in Ukraine's history and there is still a little chance we can get to the quarter-finals."