Steve McDonnell became the fourth new signing over the weekend, signing for the Nailers for the second successive summer having arrived from Worksop Town in 2019.
He made five substitute appearances for Belper before returning to the Tigers, where he was a regular starter last season.
The three other new faces are versatile defender Ben Rhodes, striker Danny Frost and former Ossett goalkeeper Leigh Overton.
Their retained list of 14 includes winger Nathan Curtis and full-back Josh Woodcock, who has made his loan switch from Lincoln City permanent.
New deals have also been offered to George Milner and Reece Bertram.
Defender Phil Watt departs to join Mickleover Sports, while Cameron Clark has decided not to re-commit to the club as he plans to go travelling in the New Year.
Retained
Ryan Musselwhite
Josh Woodcock
Danny South
Sam Wright
Derry Robson
Danny Gordon
Corey Gregory
Nathan Curtis
Brodie Litchfield
Alex Peterson
Steve Ridley
Charlie Dawes
Harley Kozluk
Yaya Dembele
New Signings
Ben Rhodes (Worksop Town)
Danny Frost (Stocksbridge PS)
Leigh Overton (Armthorpe Welfare)
Steve McDonnell (Worksop Town)
Offered terms (decision awaited)
George Milner
Reice Bertram
Departed
Phil Watt (to Mickleover Sports)
Cameron Clark (unavailable)
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