Injury-hit Chester FC have made their ninth signing since new manager Marcus Bignot took charge.
The busy Bignot has completed a deal for teenage striker Jorome Slew.
The 19-year-old arrives from Northern Premier League Division One North outfit Goole AFC.
Slew came through the ranks at Sheffield United and has been on trial at their Championship rivals Barsnley.
But most of his football has been played in non-league with loan spells at Mickleover Sports, Matlock Town, Worksop Town and Harrogate Town.
But striker Zanzala is unlikely to return for a second loan spell from Derby County.
Chester are in Vanarama National League action tonight at fellow strugglers Leyton Orient (7.45pm).