Ukraine will be without striker Andriy Voronin and suspended midfielder Anatoly Tymoschuk for their crucial World Cup qualifier in Andorra.
Coach Alexiy Mykhaylychenko said Voronin was less than 100 percent fit, while local media have reported a rift between the pair.
Ukraine are second in Group Six behind already-qualified England, knowing a victory against Andorra on Wednesday will clinch a place in next month’s two-legged playoffs.
If Mykhaylychenko’s team fail to win, Croatia can pip them for second place with a victory in Kazakhstan who are second from bottom.
“Andorra are not the weakest opponents,” Mykhaylychenko told reporters after Saturday’s 1-0 home win over England.
“The Croats had problems playing in Andorra and England only managed to crack their defence in the second half. We need to take one more step but it will not be easier than the game against England.”