Fearon, 27, played a key role in Liversedge’s NPL East Division title triumph last season, scoring 16 goals in 32 starts.
He said: “Having discussed the ambition of the club with the management team and chairman, it was a straightforward decision for me, and I am really looking forward to the season ahead with Ossett United.
“After playing here as an away player I have always been impressed with the club, the quality of the facilities and especially the fantastic support base the club has.”
Manager Jas Colliver added: “Ollie is a hardworking forward with an eye for a goal, he started out in youth football at the Barnsley Academy and has played in successful teams.
“As well as last season, Ollie has also gained promotion from the NCEL with AFC Mansfield. He is a player we admire and have worked with previously; we are excited to work with him again.
“Ollie has many key strengths which will only make us stronger as a team. We are delighted he chose to join us after a lot of competition from teams in our league and the NPL Premier Division.”
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