The Red Sox have received permission from Major League Baseball to negotiate with first baseman Adrian Gonzalez on a new contract, according to sources.
Boston and San Diego agreed to a deal on Saturday that would send Gonzalez to the American League.
On Saturday night the Red Sox continued to discuss a new deal with Gonzalez. The negotiation window will close at 2 p.m. ET on Sunday, according to a source.
Red Sox, Gonzalez Discussing New Deal