Breen first played Gaelic football at club level with Beaufort. He was part of the club's senior team that won four Mid Kerry SFC titles between 2016 and 2022.[1] He lined out at centre-back when Beaufort beat Easkey to win the All-Ireland Club JFC title in 2019.[2] Breen has also been called up to the Mid Kerry divisional team and lined out when they were beaten in finals by East Kerry in 2020 and 2022.[3][4]
After a number of years away from the inter-county scene, Breen was drafted onto the senior team during their Munster SFC-winning season in 2021.[9] He was dropped from the panel in 2022, before returning the following year and coming on as a substitute in Kerry's defeat by Dublin in the 2023 All-Ireland final.[10]