[3] In 2017, following his release from Leicester, Mitchell joined National League North side Nuneaton Town.
His only appearance for the club came as a substitute in a 1–0 home defeat to Slough Town the FA Cup Second Qualifying Round on Saturday 3 October 2020.
[9] On 10 April 2021, with King's Lynn due to play Chesterfield, it was announced that Mitchell had joined the Derbyshire club for an undisclosed fee subject to league approval.
[14] On 16 June 2023, Mitchell signed for recently relegated National League club Rochdale on a two-year contract.
[15] Having scored seven goals in six matches, Mitchell was named National League Player of the Month for September 2024.