Aston Villa striker Milan Baros is still suffering from a foot injury and is uncertain when he will be available to play for the Czech Republic in the World Cup.

Baros has not trained since sustaining the injury in a friendly against Trinidad and Tobago on June 3.

"The treatment has not been going in the way we had planned," team press officer Lukas Fousek said.

Baros tried to train after taking pain-killing injections, but only lasted 30 minutes.

"It was okay for a while, but than I had to stop," Baros said. "When I make a faster movement, it hurts.

"I hoped it would get better, but it returned again. I have to keep waiting."

The Czechs, who next play Ghana in Cologne on Saturday, have a crisis up front as giant striker Jan Koller was forced off early on during the 3-0 victory against the United States with a thigh injury.

The giant striker has only stretched the muscle, not torn it, and he is expected to return by the knock-out stages should the Czechs progress.

The scorer of the first goal against the Americans, Koller will now rest for five days before beginning his rehabilitation.