CONWAY, S.C. — Grayson McCall, the record-setting Coastal Carolina quarterback who was forced to give up football because of concussions, is joining the Chanticleers’ staff. Coach Tim Beck announced this week that McCall would work as an offensive analyst under new coordinator Drew Hollingshead. Chants Up!” McCall threw for 10,005 yards in 42 games at Coastal Carolina from 2019-23 with …