Bacon returned to the Don Amott Arena for his second spell, after joining on loan from Pitching In Northern Premier League Premier Division rivals Gainsborough Trinity in September.
Walshaw joined the club in September from US College soccer, having started his football career as a Chesterfield youth player.
He made one competitive start for Sports in a home match against Witton Albion, and joins Sheffield FC in the S/East Division.
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