AUSTIN, Texas (AP) — An attorney for Lance Armstrong told the U.S. Anti-Doping Agency the cyclist will cooperate with efforts to “clean up cycling,” though it’s the sport’s governing body and world anti-doping officials who should take the lead.

In letters sent this week between attorneys for Armstrong and USADA, and obtained by The Associated Press, USADA attorney William Bock requested Armstrong testify under oath by Feb. 6, but the cyclist’s attorney, Tim Herman, responds that Armstrong cannot accommodate that schedule.

Last week, Armstrong admitted to taking performance-enhancing drugs to win the Tour de France seven times.

Herman’s letter said Armstrong intends to appear before the International Cycling Union’s planned “truth and reconciliation” commission.

Herman says the cycling union and the World Anti-Doping Agency should take the lead in cleaning up the sport.