Gonzales, 28, leaves the Gladiators having not played a game for the club, joining them in the off-season from South Shields.
The former Colne, Chorley, Clitheroe, Stockport and FC United striker played for the Rams in Saturday’s friendly against Radcliffe.
He said: “I know a few lads in the dressing room but it was good to meet the rest of the squad on Saturday and I am really looking forward to pushing on with this group.
“These sort of games are all about raising fitness levels and getting the lads to gel. We looked on Saturday like we had been playing together for a while but there’s still a lot more to come from me and the rest of the lads.”