The agreement helps clear the way for Jackson to be traded, provided the Chargers can agree to terms with another team.
The agreement essentially rolls what could have been a six-game suspension into four games. Jackson is serving a three-game ban for violating the NFL's substance-abuse policy.
Also, the Chargers placed him on the roster-exempt list, meaning he'd be suspended for three games once he signed with San Diego. Jackson's side thought he shouldn't have to serve that suspension if he were traded.
Sharpe back at CBS
Analyst Shannon Sharpe will return to CBS' NFL studio show Sunday after a woman withdrew a complaint against him that had led to a restraining order. Sharpe announced Wednesday he would take a leave of absence until the matter was resolved. "I had every expectation that based on truth alone these claims would never reach a court,'' he said in a statement.
Around the league
Vikings receiver Percy Harvin's status for Sunday against Miami is uncertain after he missed practice with a hip problem . . . Cardinals receiver Early Doucet will have surgery to repair a sports hernia and is expected to be out 3-6 weeks . . . Redskins defensive tackle Albert Haynesworth (sprained ankle) couldn't get through a full practice for a second straight day . . . Browns quarterback Jake Delhomme (sprained ankle) missed a second straight practice. If he can't start against the Chiefs, Seneca Wallace will fill in . . . Cowboys fullback Deon Anderson will be out 2-4 weeks after knee surgery.