Born in Liverpool, Seary joined Preston North End at youth level, signing professional terms aged just sixteen.[4] In August 2022, he got a first experience of senior football when he joined Northern Premier League Premier Division club Warrington Town on a three-month loan deal,[5] later extended until January 2023.[6]
On 8 August 2023, Seary made his first-team debut for Preston North End, starting in an EFL Trophy First Round penalty shoot-out defeat to Salford City.[7] Following the match, manager Ryan Lowe confirmed that plans were to send the player on loan to a League Two club.[8] Two weeks on from having signed a new eighteen-month contract,[9] he made his league debut on 23 February 2024, substituted on in added time at the end of a 3–0 victory over Coventry City.[10]