NFL Media Insider Ian Rapoport reported Wednesday that Rice has decided to retire due to concussion concerns, according to a source who has spoken with the wide receiver. ProFootballTalk first reported Rice's retirement. The team later announced the news. Rice had been expected to be in a camp battle this summer for a role as an outside receiver in Seattle. He re-signed with the Seahawks in April after the team released the veteran as a salary-cap casualty in February.