It appears the team did want to bring in a running back. Per Adam Schefter & Ian Rapoport, the 49ers agreed to terms with RB Tevin Coleman on a 2-year deal worth a max value of $10M. Kyle Shanahan gets his guy. He has always spoke highly of Coleman, who is a big play threat every time he touches the ball.
Shanahan has always loved the idea of using multiple backs on the field at the same time. Here’s a quote of him on Coleman and just that back in 2017:
“Tevin has a lot of talent as you can see,” offensive coordinator Kyle Shanahan said.