North Carolina set to open spring practice with an eye on QBs, LBs

"I don't know who told you Mitch is our starter," North Carolina coach Larry Fedora said of Mitch Trubisky. "He may be. He has to earn it."North Carolina opens spring practice Sunday, eyeing a return to the ACC championship game. Here are three questions facing the Tar Heels.

1. Quarterback. Marquise Williams is gone, and the heir apparent is Mitch Trubisky. But coach Larry Fedora told the Raleigh Sports Club earlier this week that Trubisky was not quite a lock. "I don't know who told you Mitch is our starter," Fedora said. "He may be. He has to earn it." Fedora is no stranger to creating competition at the position during spring and fall practice. Williams had to hold Trubisky off the last…