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The Packers acquired running back Knile Davis in a trade with the Chiefs on Tuesday and they need to open a spot on the 53-man roster as a result.

It appears that move will involve placing veteran cornerback Sam Shields on injured reserve. Shields suffered his fourth concussion in the last six years during the season-opening win over the Jaguars and has missed the last four games.

Shields made a post on Instagram saying that he hopes to be back in eight weeks and the team officially announced the move a short time later. That’s the soonest a player designated to return from injured reserve is eligible to play again.

“I’m making great progress and hope to come back in 8 weeks and play this season,” Shields wrote. “I will make a full recovery within that time frame.”

With Shields out of the picture, the Packers would move forward with Damarious Randall, Quinten Rollins, Ladarius Gunter, Josh Hawkins and Demetri Goodson at corner. Randall and Rollins are both dealing with groin injuries and were expected to do side work only at Tuesday’s practice.