MIAMI — Safety Gibril Wilson has signed a multiyear contract with the Miami Dolphins, who are on the verge of losing three defensive backs to free agency.

Wilson, a five-year NFL veteran, signed Thursday after being released last week by the Oakland Raiders. He spent four seasons with the New York Giants and started at free safety for their 2007 Super Bowl championship team.

The signing signals the likely departure of Yeremiah Bell or Renaldo Hill, the Dolphins' starting safeties. Barring last-minute deals, Bell and Hill were to become unrestricted free agents Friday, as was cornerback Andre Goodman.

Wilson has 66 career starts, including 15 last season, when he played strong safety and made 129 tackles with two interceptions.