Bye week addition of DeForest Buckner should provide a big lift to 49ers defense

A new defensive coordinator, an infusion of youth and the return of Dre Greenlaw had San Francisco 49ers star linebacker Fred Warner raving about how much fun he was having anchoring one of the league's more surprising units this season before heading out on the bye.Warner's enthusiasm, and the potential of the Niners defense, only got higher after the team made a big move during the week off to bring back three-time Pro Bowler DeForest Buckner to help anchor the defensive interior."I just love the blend of obviously the older veteran leadership, as well as the younger guys that have asked to play a lot of snaps, who are out there competing their tail off," Warner said before the week off. "The blend right now is great. We obviously have to get healthy to have all of our weapons out there to help us compete to win these games. It's always next-man-up mentality. No matter who's out there, we have to be able to compete and execute our job at the highest level. So, we'll be better." San F