Sources told NFL Network that the guard is signing a one-year pact with the AFC West franchise. Incognito is expected to start at left guard.
The four-time Pro Bowl selection last played for the Buffalo Bills, starting 16 games during the 2017 season. Incognito, 35, made the Pro Bowl three consecutive times before sitting out last season. The 6-foot-4, 322-pound offensive lineman entered the league as a third round pick by the St. Louis Rams in the 2005 NFL Draft.
Incognito played three seasons for the Rams, before joining the Bills during the 2009 season. He played four seasons for the Miami Dolphins, before sitting out in 2014. He signed with the Bills again in 2015.
Incognito has 150 career starts. He started all 16 games in each of his last three seasons with the Bills. The Raiders continued OTA off-season workouts Tuesday. Oakland has mandatory minicamp from June 11 to 13.