The 2021 NFL free agency period will officially begin on March 17, with two days of legal tampering starting on March 15.

The Chicago Bears are expected to make a significant move as a defender in the next two months, and the free agency will give them their first chance to improve the most important position in the game.

But if we look at this year’s free agent quarterback market through realistic lenses, is there any viable option that qualifies as an upgrade over Nick Foles?

Here are five free-agent defenders that the Bears will have the most realistic chance to hire. You can judge whether it is worth pursuing any of them.