There's a very good chance that Max Johnson will be the starting quarterback this week for the Tar Heels against Clemson and, depending on how that goes, moving forward.
Gio Lopez, who has started the first four games for UNC, has been limited in practice with an injury. He is listed as a starter on the official depth chart this week, but in Bill Belichick's world, that doesn't mean very much.
FWIW (probably not a whole lot), Gio Lopez listed as starting QB on UNC's unofficial depth chart in the team's game notes for Clemson.