The Bayer Leverkusen man has damaged ligaments in his left ankle and will be out of training until Monday at the earliest.

Hertha Berlin defender Steve von Bergen has also joined the growing injury list after breaking a bone in his hand. He, too, will miss Saturday's game against Slovakia.

The Euro 2008 co-hosts have already been forced to shuffle their pack this week due to a number of injury niggles.

Thomas Haberli has been added to the provisional squad as cover for Blaise Nkufo, with the FC Twente striker almost certain to miss the finals due to a thigh problem.

Young Boys striker Haberli has won just one cap but scored 18 times in last season's Swiss Super League to finish second in the goalscoring charts behind club team-mate Hakan Yakin.

Reserve goalkeeper Fabio Coltorti of Racing Santander has also been forced out due to post-viral fatigue syndrome and has been replaced by Grasshoppers' Eldin Jakupovic.

Lyon defender Patrick Muller and new Liverpool signing Philipp Degen are both trying to prove their fitness after injury-hit seasons, while Alexander Frei and Ludovic Magnin have also spent time on the sidelines.