Franck Ribery is in a race against time to prove his fitness ahead of France's Euro 2012 quarter-final showdown against Spain on Saturday.
The Bayern Munich ace pulled up during a light jogging exercise at an open training session, immediately bending down to clutch his left heel before limping off the field.
Also absent from practice was Samir Nasri, who was told to rest in order to shake off a minor knock picked up in Les Bleus' 2-0 loss to Sweden on Tuesday.
Ribery had picked up the injury before joining up with Laurent Blanc's men in Poland, having been fouled by Didier Drogba in Bayern's Champions League final defeat by Chelsea.
PETALING JAYA, May 26 — Pakatan Rakyat (PR) wants to sign up some 500,000 volunteers to protest at the Election Commission (EC) offices until the members resign in favour of replacements who report directly to parliament.