*Club domestic league appearances and goals, correct as of 21:02, 2 October 2024 ‡ National team caps and goals, correct as of 00:04, 28 September 2022
Kerrigan started his career with Sligo Rovers.[2][3][4] After three years with UCD, he signed for Como in Serie B in July 2022.[5][6][7] On 21 August 2022, Kerrigan made his league debut for the club and also scored his first goal for the club in a 2–2 draw away to Pisa.[8] Kerrigan suffered a long term injury in September 2022, tearing his anterior cruciate ligament.[9] He made his return on 13 August 2023, when he made his first appearance in just under a year by coming off the bench in a 1–0 loss away to Serie A side Lecce in the Coppa Italia.[10]
On 26 January 2024, Kerrigan moved on loan to Serie C club Novara until the end of the season.[11][12]
On 30 August 2024, Kerrigan signed for Belgian side Beveren on loan.[13]
Personal life
He is first cousins with Johnny Kenny, who is also a professional footballer.[14]