Ardley took over at Notts in November 2018, less than a fortnight after leaving his former club AFC Wimbledon.
He took his first steps into management at Kingsmeadow and saved The Dons from relegation out of the EFL in 2012-13.
He led them to promotion from League Two through the play-offs in 2016 – their first since they were formed in 2002.
He was the EFL’s third longest-serving boss before leaving Wimbledon in November 2018 after a difficult opening to the season saw them win just three league games.
Ardley was with the Dons during his playing days, too, spending 11 years on their books before spells with Watford, Cardiff and Millwall as he made nearly 400 career appearances.