Having an area of strength on your roster is a good thing.
There should be no rush to change that. The Packers do not have such a glaring hole on the team that warrants hasty action. Yeah, ILB could use upgrading - but the draft could be the answer to that. Right now, it's not some horrible black hole that needs instant fixing. TE? I think both Rodgers & Bostick, with seasoning, could improve that position.
Better to keep things close to the vest and wait. If another team becomes desperate enough at the CB position to make an outlandishly over the top offer, then it's time to consider.
Right now we need all hands on deck.
The key will eventually be Tramon Williiams & his salary. Right now he is needed - but if the other DB's continue to grow, unloading him next offseason might provide cap space to address other areas.