Guion will not be prosecuted, and there will be no criminal record stemming from his Feb. 3 arrest in his hometown of Starke, Florida, according to his agent.
"The case was settled. Case closed," Guion's agent, Seth Katz, told the Milwaukee Journal Sentinel Tuesday. "Letroy's relieved at this point. He's relieved it's behind him and he can focus on getting back to football."
Guion was pulled over and police found 357 grams of marijuana, a registered gun and $190,028.81 in cash with him. On Tuesday, Guion reached a plea deal in which he paid a $5,000 fine. As a first-time offender, the charges were dismissed.
The vehicle and cash - which Guion claims are from playing football - are still involved in separate civil case.
Katz stressed Guion's record will be cleared. The NFL can still punish Guion under its personal conduct policy, but for now the defense tackle can turn his attention back to football.
Guion finished last season with 32 tackles and 3 1/2 sacks in relief of an injured B.J. Raji. Both Guion and Raji are unrestricted free agents.
The focus may turn to signing Guion now. The Packers and Guion have had "very, very productive conversations," Katz said.
"It's a great fit. Letroy loves the city, he loves the fans, loves his teammates, the coaches, the front office," Katz said. "So we're hopeful that we can get something done."