Harrison joins the club after leaving local neighbours Ossett United.
He said: "I'm excited. It's actually been a long time coming to be honest. For the past year I've been on and off talking to Vill (Powell) and I just thought now is a good time to sign. I'm looking forward to it."
Racchi, Boyle and Haigh have all re-signed ahead of the 2021/22 Pitching In Northern Premier League N/West Divisions season.
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