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Cleveland has agreed to trade C/1B Victor Martinez to the Red Sox, SI.com has learned.

The deal is believed to include right-hander Justin Masterson. MLB.com's Jonathan Mayo reports that another player involved is lefty prospect Nick Hagadone. And SI.com's Tom Verducci says minor league right-hander Bryan Price could also be headed to Cleveland.

Clay Buchholz is not included in the deal, SI.com has learned. Hard-throwing reliever Daniel Bard won't be involved either, as Cleveland only wants starters.

The Padres have dealt Jake Peavy to the White Sox for the second time this year, but the pitcher will have to waive his no-trade clause to make the deal official.

San Diego would acquire a package of minor leaguers in the deal.