Boston has reached a tentative agreement on a two-year contract with Cameron, according to a person familiar with the negotiations. The deal is subject to a physical, the person said on condition of anonymity because the agreement, worth between $15 million and $16 million, was not yet final.
This, after free-agent right-hander John Lackey, who has agreed to a five-year deal, took a physical in Boston earlier in the day.
If the Red Sox are successful in signing Cameron, it further cements a development that has become all but certain in recent days -- Jason Bay will not be returning.
Cameron, a right-handed hitter, could split time with lefty Jeremy Hermida in left. In fact, Cameron would likely serve as an all-purpose backup, allowing center fielder Jacoby Ellsbury and right fielder J.D. Drew to get their share of rest.
Cameron, who will turn 37 in January, spent the past two seasons with the Milwaukee Brewers. In 2009, he hit .250 with 24 homers and 70 RBIs.
A center fielder for most of his career, Cameron has always been a highly regarded defender. He is a three-time Gold Glove Award winner, most recently in 2006.
In 1,829 Major League games, Cameron has a .250 average with 265 homers, 926 RBIs and a .340 on-base percentage. He has played for the White Sox, Reds, Mariners, Mets, Padres and Brewers. He has hit 20-plus homers eight times.
But he has also been known to strike out a lot, whiffing 130-plus times in 10 of the past 11 seasons.
Ian Browne is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.