Bosa, Shanahan know improved Murray poses unique challenge for 49ers

SANTA CLARA - After the challenge of trying to bring down New England Patriots quarterback Jacoby Brissett in Week 4, Nick Bosa and the 49ers' defensive line have a new test on deck this Sunday in Arizona Cardinals signal-caller Kyler Murray. The elusive quarterback has given the 49ers' defense difficulty in the past with his mobility - enough to be referred to as a "squirrel" by former 49ers defender and current Indianapolis Colts defensive tackle DeForest Buckner. "Yeah, I actually thought about that today," Bosa said Wednesday of the anecdote. "That's funny. I miss Buck." Coach Kyle Shanahan believes Murray is even better than what San Francisco has previously seen now that he's working in a new offensive system and under new coaching. The former No. 1 draft pick also is nearly two years removed from a season-ending ACL injury that occurred toward the end of the 2022 NFL season. "He just looks so much more comfortable," Shanahan said. "I thought he looked really good last year when he came in, just watching their offense, seeing him in that new scheme for the first time. I think he got to sit back and watch other guys do it. You could tell he really consciously tried to play...