Raiola took his base salary from $4.050 million to $1 million to stay with the team. Burleson dropped his $4.5 million base salary to $2 million. Burleson retained the final year of his contract in his new deal. He's scheduled to make $5.5 million next year.
With those savings, the Lions are now $5 million under the cap.
Raiola, 34, has played 12 seasons for the Lions, starting 172 games after being selected by Detroit in the second round of the 2001 draft.
Burleson restructured his contract for a second straight year. He told The Associated Press in a direct message on Twitter last week that he redid his deal because he wants to retire with the Lions and to do his part to bring more athletes to the team.
Burleson was limited to six games last season because he broke his right leg. He had a career-high 73 receptions in 2011, his second year with the Lions. Burleson has 418 career catches for 5,169 yards and 38 touchdowns with Minnesota, Seattle and Detroit.
Information from The Associated Press was used in this report.