Based in Doncaster, the Welfare play their football in the NCEL.
He featured heavily for the club last season as they finished eighth in the division - their highest league position for a number of years.
Platter will now link up with a Sheepicorns side still searching for their first point of the new Pitching In NPL East Division season, following back-to-back defeats to Sheffield and Dunston.
He could be in contention to make his debut against Wythenshawe in the FA Cup preliminary round on Saturday.
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