Guard Alex Boone is not attending the 49ers voluntary offseason program and he wants a new contract, ESPN reported.
Boone’s agent, Jonathan Feinsod, declined to comment on the report when reached Tuesday by CSNBayArea.com.
Boone has two years remaining on an extension he signed in November 2011 when he was a backup. The deal, which was negotiated by Boone's former agent Adam Heller, averages about $2 million per year. Boone has started every game at right guard the past two seasons.
The 49ers have a mandatory minicamp scheduled for June 17-19. Any player who misses all three days of a mandatory minicamp is subject to a $60,000 fine.
Quarterback Colin Kaepernick, guard Mike Iupati, outside linebacker Aldon Smith and wide receiver Michael Crabtree are among the potential high-priced 49ers who are entering the final years of their contracts.