On 5 August 2020, Theobalds left Korona Kielce by mutual consent after making two appearances for the club.[6] A month later he returned to his previous club, Tonbridge Angels.[7]
On 18 March 2021, Theobalds returned to Poland to join fourth-tier side, Unia Tarnów.[8]
After six first-team appearances for Dartford in all competitions, Theobalds joined Welling United until the end of the 2021-22 season.[9] On 18 March 2022, Welling United announced that Theobalds had left the club along with four other players.[10]