Former Tour de France winner Jan Ullrich, who has been linked to a damaging Spanish doping inquiry, has agreed to submit to a DNA test in an effort to clear his name.

"I want this affair to be sorted out quickly so that I can get back on my bike," Ullrich was quoted as saying by his agent Wolfgang Strohband in an article published by Bild.

On Tuesday, Bonn prosecutors said they wanted to compare samples in Switzerland with those from blood seized by Spanish authorities during Operacion Puerto from properties owned by the infamous Spanish doctor Eufemiano Fuentes. Ullrich has agreed to provide a saliva sample to investigators.

The 32-year-old Ullrich, the Tour de France winner in 1997, has been without a team since he was sacked by T-Mobile on the eve of the 2006 Tour in the wake of the Spanish investigation.

Ullrich had always denied being a client of Dr Fuentes. A former holder of a Swiss license, Ullrich became the subject of a Swiss investigation in the after his ejection from the Tour de France in July.