The 49ers just made an interesting change to their offensive coaching staff. They promoted assistant passing game specialist Klay Kubiak to offensive coordinator. It's unclear how Kubiak's job will change.

Now that the San Francisco 49ers are set to sign Brock Purdy long-term, Kyle Shanahan is ready to tether himself to the Iowa State product.

The 49ers are hoping to keep Sorensen around on Kyle Shanahan's staff in a lesser role, just not as the defensive play-caller. Sorensen has spent the last three years in the organization, holding titles of defensive assistant, defensive passing game coordinator and nickelback coach before being named defensive coordinator prior to last season.