Only players who are out of contract and those who could be transferred by an emergency loan can by signed from next Friday until 21 March.
And Cox, speaking at this morning's press meeting, said that the next few games would dictate whether or not he needs to make further signings.
Paul Cox is speaking to Jason Harrison of Mansfield 103.2 at this morning's press meeting ahead of our match to Dartford
Cox said: "We still have players in our sights. Whether we need them will be down to the squad of players we have here who I think have performed excellent over the last period of games.
"If they take that sort of performance and mindset in the next few games then I won't need to go out and strengthen. The games coming up will tell me a story as to whether we need to go into the loan market."