Mathis, 33, played four seasons in Philadelphia and was a Pro Bowl selection in each of the past two years. From 2011–2013, he started all but one of the Eagles' games. He missed seven games last season with a sprained MCL but was still selected to the Pro Bowl.
Mathis had not reported to Philadelphia's organized team activities and was seeking a new contract. He had two years and $13.5 million left on his deal.
Pro Football Talk's Mike Florio reported on Tuesday that the Eagles had offered Mathis a $1 million raise before last season but he did not accept. He did want to accept the offer this off-season but was told it was no longer on the table because Chip Kelly had been made the head of player personnel, replacing Howie Roseman, who made the offer to Mathis.
- Dan Gartland