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The offseason hasn't exactly gone to plan for the San Francisco Giants.

First, the club lost out on Pablo Sandoval, as the switch-hitter opted to sign with the Boston Red Sox on a five-year, $95 million deal. Then, the Giants missed out on lefty ace Jon Lester, who instead inked a six-year, $155 million contract with the Chicago Cubs.

Adding another starter should definitely be on the team's to-do list, but figuring out just who will be playing third base and left field are the most pressing issues.

Chris Haft of MLB.com points to a trade as the best option at third. Haft mentions Casey McGehee of the Miami Marlins, Lonnie Chisenhall of the Cleveland Indians and Will Middlebrooks of the Red Sox as three players that the team could check in on.

As for left-field, Henry Schulman of the San Francisco Chronicle reports that the Giants could look to make a deal for a player rebounding from a "down year." Schulman speculates that Allen Craig of the Red Sox would fall into that camp.

Justin Upton could also be an option to play left field at AT&T Park. According to Mark Bowman of MLB.com, San Francisco is one of the teams that has "show[n] interest" in the powerful right-handed hitter. It's worth wondering if the Giants have the pieces to make such a deal happen. San Francisco's farm system checked in at the No. 27 spot in Bleacher Report's ranking of minor league systems.