The San Francisco 49ers remain confident they'll sign Nick Bosa to a lucrative contract extension and that there's no scenario in which they would trade the defensive end.

Kyle Shanahan said recently that Bosa's extension negotiations have gone about how he expected, even though Bosa has not been with the team since it opened training camp July 25.

"I thought it would come probably at this time, just looking at the history of those things," Shanahan said. "And I'm really hoping it gets done. I know they're working tirelessly at it ... but hopefully we can get him in here sooner than later."

Asked if there was even a percentage chance he'd consider trading Bosa, John Lynch minced no words.

"No," Lynch said. "Real simple."