Contador, considered one of the top grand tour cyclists in the world, told the Associated Press that "next year will most likely be my last."
The Spaniard, who will begin his season at the Tour of Andalusia this week, is confident that 2016 will be his final year in the sport.
"I could change my mind if I have a mishap on the Tour like last year," Contador said, "...but little else could make me change."
Contador failed to finish last year's Tour de France after crashing on the race's 10th stage. Later in the year, he won the