The 24-year-old centre-back said: “I needed a change. I had been there since I was seven or eight, so it was about starting afresh somewhere new and enjoying my football again. I think I have done that this year.
“I have got no bad feelings towards Leeds. I loved my time there and am now loving it here, so hopefully that can continue.”
Lees had made 135 appearances for the Whites prior to his departure in the summer, progressing from youth prospect to key first-team star over the course of four years.
Yet by the time his career at Elland Road drew to a close, there was a sense that his development had stalled, and he was failing to push on with his career, despite his still relatively young age.
He has since cemented himself as a key part of the Owls defence, making 46 appearances this term, and playing his part in Wednesday matching their 17-game historical clean sheet record - with two games still to play.
His impressive defensive presence would have been well utilised this season at Elland Road, with the various managers in charge of the Whites failing to decide upon a settled back-line, and Lees progressing into a captaincy role at Hillsborough.
Neil Redfearn does seem to be fairly aware of who he wants to call upon as his first-choice defence, but there is no doubting that Lees was a big loss when he departed Elland Road on a free transfer last summer.