Delmas, a second round draft pick in 2009, has had 267 career tackles, 3 sacks, 3 interceptions and 2 touchdowns.
Delmas joins many safeties that the 49ers are rumored to be interested in. Charles Woodson (Packers) visited with the team on Wednesday. Rumors have the 49ers still interested in Ed Reed (Ravens) if he does not sign with the Houston Texans.
On Wednesday, the 49ers lost safety Dashon Goldson to a 5-year, $41.25 million contract with the Tampa Bay Buccaneers.