Racchi, 32, made his senior debut for Huddersfield Town in 2007, and has since featured for a long list of clubs, including Bury, Wrexham, York City and Halifax Town.
He has also featured for FC United of Manchester, Grantham Town and Ilkeston.
Salford City development squad midfielder Will Shepherd has joined the club on a one-month loan.
He made his first team debut in a Manchester Premier Cup win over Ashton United in October 2018, coming on as a substitute.
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