Samir Nasri and Franck Ribery are thought to be fitness doubts for France ahead of Saturday's Euro 2012 quarter-final against holders Spain.
Nasri missed Les Bleus' training session on Wednesday with a minor knock, while Ribery pulled out of the practice after hurting his ankle.
The due are now understood to be in a race against time to be fit for the match against the defending champions.
France finished second in Group D following a 2-0 defeat to Sweden in their final match.