The move wasn't totally shocking considering the Dolphins had been talking with Wilkinson's agent for a while now.
Wilkinson, released in the offseason by Detroit, was said to be contemplating retirement if he couldn't hook up with the Dolphins.
The former No. 1 overall pick will provide depth at nose tackle and conceivably could challenge fellow veteran Keith Traylor for the starting job.
Because of Traylor's age and problems with his knees, the Dolphins wanted to add depth at nose tackle this offseason and also had been hoping that Manuel Wright would develop.
With Wright's situation the way it is -- he's still away from the team with a roster exemption -- the need to sign Wilkinson became more pressing.
It's too early to predict when Wilkinson will make his preseason debut for the Dolphins, but a good guess would be Aug. 24 game against Carolina.