The 49ers’ plan is to ease Taylor Mays into the lineup – initially making him part of a substitution package and gradually increasing his responsibilities. Coach Mike Singletary described Mays as the most annoying rookie on the roster. But he did so with a smile. “He’s driving (secondary coach) Vance Joseph and Johnnie crazy,” Singletary said. “He’s called me a few times. He’s called them a few times. ‘Hey, coach, what about this? Hey, coach, what about that? Can we get together tomorrow? Can we do this? Can I come in on Sunday? That’s the kind of kid he is, and I’m excited about him.”