I'm guessing he probably will, only because there is such a need for corners in the NFL. I think if he sticks around another year he will be a first round pick (maybe...but I don't seem to here of very many corners taken in the first round).
Still, Mabin has taken his lumps this year but he's turning into a pretty solid defensive back as well. It sure would be nice to have both of those guys back there again next year though.