Standout San Francisco 49ers guard Alex Boone has not been working with the team during the voluntary portion of the offseason and is not attending Tuesday's OTA session because he wants a new contract, according to multiple NFL sources. Boone, 26, has two seasons remaining on a contract that will pay him about a total of $4 million. Read more http://espn.go.com/nfl/story/_/id/1...rancisco-49ers-wants-new-contract-absent-otas