Kris Kocurek shares why Nick Bosa felt need to become 49ers mentor this season

SANTA CLARA —  As the longest-tenured player on the 49ers’ defensive line, edge rusher Nick Bosa is embracing his leadership role.Previously, players like Arik Armstead (now on the Jacksonville Jaguars), DeForest Bucker 9 Indianapolis Colts) and D.J. Jones (Denver Broncos) were the group’s mentors. But this season, 49ers defensive line coach Kris Kocurek has enjoyed watching Bosa evolve into the role.Kocurek on Tuesday shared how the All-Pro has been there to support Mykel Williams, CJ West and rest of the young players in the room through the offseason and into training camp. “Just watching him with the young guys, put his arm around them after every rep,” Kocurek said. “Specifically Mykel early on, and now he’s kind of gravitated towards CJ, and all of them. For an extended period of time here we had Arik and DeFo and D.J. and a lot of the same guys the room. He didn’t really need to be a leader.“Now, he sees that some of the younger guys in here that are going to need to play, and play big-time football for...