Grayson, 28, made 135 appearances for Basford after joining them from Mickleover Sports back in 2015.
Basford boss, Martin Carruthers, told the club’s official website: "I'm absolutely gutted to see him leave but I totally understand his reasons. He has been a truly great servant to the club and was loved by everyone.
"Not only a fantastic player for us but a top lad around the dressing room. He has been integral in all our recent success and played a key role in our title win last season. He goes with our best wishes and I can’t speak highly enough of Ash.
"He gave 100% all of the time and will be sorely missed. We wish Ash good luck and he will be welcome back at the club anytime.”
Keep up-to-date with our exclusive email newsletters.
Subscribe