The 39 - year - old German was banned for two years in February 2012 by the Court of Arbitration for Sport for blood doping and he has now admitted his guilt .
The 39 - year - old German won the Tour in 1997 .
The 39 - year - old German , who won the Tour in 1997 , was banned for two years in February 2012 by the Court of Arbitration for Sport for blood doping and he has now admitted his guilt .