As of 6:00 p.m. (ET) Friday evening, teams are allowed to actually sign players. Previously, it was a negotiation period with no official signings.
There's some discrepancy on what kind of contract he received. Kevin Acee of the San Diego Union Tribune reports it's a five-year deal while Jeff Darlington of the Miami Herald reports it's a four-year deal.
Check out The Phinsider to see what Dolphins fans think of the newest linebacker.