SANTA CLARA — Defensive lineman Isaac Sopoaga left the 49ers to sign a three-year, $12 million deal Tuesday with the Philadelphia Eagles, a league source confirmed.
Sopoaga was the third 49er to exit Tuesday, following quarterback Alex Smith's official trade to the Kansas City Chiefs and tight end Delanie Walker's four-year deal with the Tennessee Titans.
The 49ers, meanwhile, were preparing to host high-profile free agents in defensive back Charles Woodson and defensive tackle Glenn Dorsey, according to ESPN.
Sopoaga's nine-year tenure with the 49ers equaled punter Andy Lee's as the second-longest behind long snapper Brian Jennings, who just finished his 13th season.
Sopoaga is guaranteed approximately $5 million in his new pact with the Eagles, who earlier this year hired away Tom Gamble from the 49ers to serve as their vice president of player personnel.
Sopoaga flew Tuesday to the Eagles and quickly agreed on a contract, according to his agent, Kenny Zuckerman.
Ricky Jean Francois, Sopoaga's top understudy, is also expected to visit the Eagles and then possibly the Indianapolis Colts.
Walker was a part-time starter since joining the 49ers in 2006 as a third-round draft pick out of Central Missouri.
Known best for his speed, versatility and improved blocking, Walker had a career-high 344 receiving yards last season.
Of his 21 receptions, three were for touchdowns, and he may have had more if not for his drops.