Summers, 24, signed with the Steelers as an undrafted free agent out of Connecticut back in 2018. However, he was waived during final roster cuts coming out of the preseason.
After spending the spring in the AAF, Summers signed a deal with the Dolphins after the league folded. The Dolphins waived Summers in July.
Summers has yet to appear in an NFL game.
Cooper, 29, is a former seventh-round pick of the 49ers back in 2013. He was unable to make the 49ers’ 53-man roster during his rookie season but was later claimed off of waivers by the Chiefs.
The Chiefs traded Cooper to the Cardinals in return for a conditional 2018 seventh-round pick and he played out his contract before signing a three-year, $16 million deal with the Bears in 2017.
Cooper was set to make base salaries of $5 million over the final two years when the Bears cut him loose and later re-signed him to a one-year contract in 2018.
The Bears waived Cooper in November and was quickly claimed off waivers by the Lions.
In 2018, Cooper appeared in two games for the Bears and four games for the Lions, recording one tackle, one forced fumble, and no interceptions.