With Michael Crabtree out for a significant amount of the 2013 season with an Achilles tear, the San Francisco 49ers are hoping Colin Kaepernick and Vernon Davis improve their chemistry.

Davis caught six passes in Kaepernick's debut as starter against the Chicago Bears, but only had seven receptions over the next seven games.

Davis had five receptions for 106 yards and one touchdown in the NFC Championship Game and six receptions for 104 yards in the Super Bowl.

"We bond really well. We play, we joke away from the field," Davis said. "That's very important, especially when it comes to having a relationship with your quarterback. You want to be able to joke with this guy.

"It's about what you do away from here. Colin and I are going to work on the field but how's your relationship away from the field. It's always been good. Just like me and Alex (Smith)."