The Liverpool native spent two and-a-half seasons with Accrington Stanley where he played over 40 league games in League 1 and League 2.
The club did not retain his services following the 2024/2025, allowing Sligo to pounce.
The Sligo boss explained: "I've known about Seb for a couple of seasons, I actually saw him playing live for Everton's Under-23s, they were playing in an international cup at the time, I was over on a visit at Everton.
"I think his profile will suit our league in terms of his physicality, he's a central midfielder by trade but can also play full-back.
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