The striker says he's frustrated over the lack of first team action he's seen this term.
When asked about a permanent move, Cox said: "I don't know. If someone comes in to buy me and it's the right price, and the chairman and manager say 'yes' then it's out of my hands.
"If they say 'no' and a loan is the preferred option, then that's the sort of road we might have to go down. It's a decision we're going to have to make as a club and myself and my family in the next couple of weeks."