Alongside Kildare veteran Eoin Doyle as manager, Callaghan won a Kildare SFC with Naas (its first for more than three decades) in 2021 and the club then advanced to the Leinster Club SFC final.[1] In August 2022, he joined the Carlow senior football team as a performance coach under the management of Niall Carew.[1]
^"Carlow role for Callaghan". Hogan Stand. 23 August 2022. Affectionately known as 'Leper', the Naas man has been brought on board as a performance coach by manager Niall Carew, who served as a Kildare selector when Callaghan was in his prime.