"The boys at the club are brilliant and they have made it easy for me to settle in. There is definitely quality here and it's looking promising," Martin told the Evening Herald.
"To be honest, if I'm playing regularly and I'm enjoying myself then I wouldn't mind staying down here until the end of the season, but it depends what happens. You can't predict the future.
"I spoke to (United manager) Sir Alex Ferguson before I came here and he said he would review it come December."