Quarterback Max Johnson made his North Carolina debut last night when the Tar Heels took a visit to Minnesota to open up the season. But unfortunately, it’s looking like Johnson’s season with his new team could be short-lived, suffering a gruesome injury in the third quarter that led to him being carted off of Huntington Bank Stadium on Thursday night. Johnson spent two seasons at LSU and two at Texas A&M before deciding to take his talents to Chapel Hill to end his college career. The son of former NFL quarterback Brad Johnson and his mother Nikki who were both in attendance for the game and …