Carson is in his fifth season now as a Claret, after joining back in 2016.
The former Liverpool centre-back, who signed a two-year scholarship ahead of the 2019/20 season, was called up to a training camp to represent native country Scotland last season, alongside striker Joe McGlynn.
Carson joined North West County side Nelson on loan in November 2019, before joining Padiham at the beginning of December 2019 for a month's loan.
Carson is in his fifth season now as a Claret, after joining back in 2016.