Red Sox predicted to sign Mariners' All-Star OF in fascinating free agent deal

This offseason, the Boston Red Sox are likely to look for ways to upgrade their already strong roster even further ahead of what could be a huge season for a deep postseason run. Boston's pitching staff is in good shape, and the lineup is strong as well. But they could use a bit more help. That's why the Red Sox are a team to watch in some of the top free agent markets this offseason, even if the fit doesn't exactly line up. Bleacher Report's Zachary D.