Dave Tollefson is not expected to re-sign with the Giants, according to someone with knowledge of discussions between the defensive end and the organization.

The person requested anonymity because he is not authorized to speak publicly about the negotiations.

Tollefson, an unrestricted free agent, has spent the past five seasons with the team and is coming off his most productive season. He was the fourth member of the Giants' vaunted defensive end rotation. He registered a career-high five sacks, didn't miss a game for the first time in his career, and started his first two career games while showing versatility by moving inside on passing downs.

SI's Peter King ranked Tollefson as the No. 41 on his list of top free agents and noted teams will seek his versatility.

Tollefson signed a one-year, minimum contract so he had to wait until free agency opened tomorrow at 4 p.m. to sign any deal he and the Giants came up with due to league rules, but it appears as though the two sides will split.

Jorge Castillo: jcastillo@starledger.com; twitter.com/jorgeccastillo