49ers: Making the call on San Francisco's free agents in 2018

Re-sign or let walk: Making the call on 49ers’ free agents in 2018

LOS ANGELES, CA - DECEMBER 24: Carlos Hyde #28 of the San Francisco 49ers celebrates scoring a touchdown during the first quarter against the Los Angeles Rams at Los Angeles Memorial Coliseum on December 24, 2016 in Los Angeles, California. (Photo by Sean M. Haffey/Getty Images) /

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EAST RUTHERFORD, NJ – DECEMBER 18: Asa Jackson #30 of the Detroit Lions breaks up a pass for Sterling Shepard #87 of the New York Giants in the fourh quarter at MetLife Stadium on December 18, 2016 in East Rutherford, New Jersey. (Photo by Jeff Zelevansky/Getty Images) /

Cornerback Asa Jackson

Cornerback Asa Jackson had a strong preseason, eventually landing on San Francisco’s 53-man roster after the team parted ways with fellow cornerback Keith Reaser.

Jackson managed four games with the Niners, primarily on special teams, before suffering a hamstring injury in Week 4 against the Indianapolis Colts.

This subsequently landed him on injured reserve:

#49ers announce the signing of CB Leon Hall. Asa Jackson goes on injured reserve.
— Matt Maiocco (@MaioccoNBCS) October 10, 2017

He could return no earlier than Dec. 10 against the Houston Texans, but we’ll have to wait and see how the Niners secondary is by that point.

As far as long-term prospects go, it’s hard to see Jackson as anything but a depth option and occasional special teams contributor. A guess would have San Francisco wanting to use that roster spot on a player it could develop a bit more.

Prediction: Let walk