The Packers have displayed interest in bringing back Underwood this year, but that was deterred by his suspension.
Underwood dealt with a domestic violence accusation this year from his wife.
Underwood pleaded no contest to a reduced charge of disorderly conduct.
Underwood was charged following a dispute with his wife after the Packers' Super Bowl ring ceremony on June 16. He paid a fine of $767.50. It is considered a non-criminal offense. Last summer, Underwood was tangled up in a case involving two prostitutes at a Wisconsin resort.
Underwood allegedly ripped a necklace off his wife, Brandie Underwood, outside the couple's home.
Underwood is a former Packers sixth-round draft pick from the University of Cincinnati.
He was an All-Big East Conference selection at Cincinnati after transferring from Ohio State, intercepting four passes as as senior. He was released by Green Bay on Sept. 3.
For more coverage of the Packers, go to Packer Report at gnb.scout.com
NFL lifts Brandon Underwood suspension
Packer Report Top Stories
Replacing the Packers’ Free Agents: PeppersIt's a strong draft for edge-rushing prospects but how about at the elephant position that was manned by Julius Peppers and Datone Jones?
Packer Report5:59 AM
What’s Next, Ted Thompson on Twitter?Mr. Draft and Develop is now Mr. Free Agency. Well, sort of. Regardless, GM Ted Thompson picked a good time to discover free agency.
Packer ReportThursday at 9:54 PM
The Sidelines: Packers QB Aaron RodgersThis week's guest on The Sidelines with Evan Daniels podcast is Green Bay Packers quarterback Aaron Rodgers, who gives his NCAA Tournament picks and discusses going from unknown…
Scout HoopsThursday at 2:54 PM
Packers Beef Up DL with Jean FrancoisSigning Ricky Jean Francois was key with Letroy Guion scheduled to open the upcoming season with a four-game suspension.
Packer ReportThursday at 1:52 PM
Packers Post-Free Agency UpdateWhat's the state of the Packers following the first waves of free agency? CBS Sports' Will Brinson weighs in.
Packer ReportThursday at 7:53 AM