Hunt limped off in Saturdays friendly against Hearts and faces treatment on the injury which will keep him out of the start of the league campaign.
Boss Steve Evans told the clubs website: "He has a 50% tear in one of his hamstrings so that is not good news especially with Dale Tonge out and we don't know if Dale will be missing for three days, three weeks or months. We need to get on top of that; he is seeing a specialist tomorrow.
"We still have options at the back. I didn't think Mark Bradley looked out of place there and that is credit to him."