The 25-year-old made the move amid rumours of unrest at the Twickenham Stoop while a missed training session costing the wing a place in the European Champions Cup squad for a game at Wasps.
However, Yarde claims he has no issues with director of rugby John Kingston and says he is happy to have made the switch to Sale on a three-year deal.
"I thought there was a chance to have a new challenge, a clean slate and a fresh start," Yarde told BBC Radio Manchester.
"I've got no bad blood towards Harlequins. John Kingston and I never left on any wrongful terms, it was just a decision that had to be made at the time."