Germany's striker Cacau is unlikely to play against Argentina. ((Pedro Ugarte/Afp/Getty Images) )

Germany coach Joachim Loew says forward Cacau is unlikely to recover from a thigh injury in time for the World Cup quarter-final match against Argentina on Saturday in Cape Town.

Loew says Cacau will not train with the team Wednesday and that he will have a fitness test before Saturday's match but that he is "very questionable." Cacau is usually a backup to Miroslav Klose.