Boston College quarterback Anthony Brown was scrambling for a first down in the second quarter of Saturday’s 17-14 home loss to North Carolina State when the season collapsed underneath him. The redshirt freshman’s knee buckled awkwardly while making a cut with 13:06 to play. Brown had to be helped off the field and departed for the locker room on crutches. BC coach Steve Addazio announced yesterday Brown is out for the season and will require surgery to fix what he referred to as a “lower-leg” injury. “I’m not going to get into the details of everything there yet. I think that is kind of personal business,” Addazio said. “But suffice to say he’ll be gone for the year, and he’ll be having surgery.” Brown started 10 games and emerged as one of the top freshman quarterbacks in the country with 1,367 passing yards and 11 touchdowns. Brown had a breakout game at Virginia on Oct. 21 by completing 19-of-24 passes for 275 yards and three touchdowns. He was named ACC Rookie of the Week.