The Boston Red Sox have scheduled a news conference for 11 a.m. ET on Monday to announce they have completed a deal with the San Diego Padres for All-Star first baseman Adrian Gonzalez, a baseball source said. But it will happen without a long-term deal for Gonzalez, after talks broke off Sunday with no agreement in place.

The source said that the two sides have left open the possibility of continued discussions toward a long-term deal for Gonzalez after the trade is in place.

A source said that while Gonzalez is seeking a contract in the range of Mark Teixeira's eight-year, $180 million deal with the New York Yankees, the Red Sox have been holding the line at six years and $120 million. The Red Sox, multiple sources told ESPNBoston.com's Gordon Edes, also were looking for language in the contract to protect them in case Gonzalez had problems with his surgically repaired right shoulder, much like they did with J.D. Drew.

The Red Sox negotiated intensely with Gonzalez's agent, John Boggs, during a 48-hour stretch before the talks finally broke off Sunday. But both sides were satisfied that there was enough common ground for a deal to be struck, with one baseball source suggesting to ESPNBoston.com that eventually a compromise in the seven-year, $22 million range might get the deal done. The Red Sox might actually benefit from a luxury-tax standpoint by holding off on the deal until after Opening Day, when it won't count against the team's payroll for tax purposes.

In exchange, the Padres will receive three prospects in pitcher Casey Kelly, first baseman Anthony Rizzo and outfielder Reymond Fuentes, according to a baseball source. The Padres also will receive a player to be named later, a source told ESPNBoston.com's Gordon Edes.