Quote: The 40-year-old, who retired at the end of 2006, was set to deputise for the injured Felipe Massa at the European Grand Prix in Valencia on 23 August.
"Unfortunately we did not manage to get a grip on the pain in the neck which occurred after the private F1-day in Mugello," Schumacher told his website.
Schumacher suffered the neck injury in a bike accident in February.
"The consequences of the injuries caused by the bike accident in February, fractures in the area of head and neck, unfortunately have turned out to be still too severe," he added. | 
