Murphy intends to retire from baseball, the St. Paul Pioneer Press reports.
Murphy exercised the out in his contract and is now a free agent, Rhett Bollinger of MLB.com reports.
Murphy signed a minor league deal with the Twins on Thursday, the Star Tribune's LaVelle Neal reports.
Murphy has no plans to retire at this time and hopes to join a major league team in the near future, Jon Morosi of MLB Network reports.
Murphy was granted his release by the Red Sox on Monday, Rob Bradford reports.
Murphy opted out of his contract with the Red Sox on Sunday, Tim Britton of the Providence Journal reports.
Murphy said he's considering retirement if he doesn't earn a spot on Boston's major league roster, WEEI.com reports.
Murphy agreed to a minor league contract with the Red Sox on Monday, ESPN's Jerry Crasnick reports.
Murphy could be a free agent target of Texas if the injury to Josh Hamilton requires additional surgery, the team's web site reports.
Murphy's 2016 option was declined Wednesday, ESPN's Buster Olney reports.