Source: Dan Mori, CNN Bleacher Report 
Signing Parra would not be considered a major move by any means, but he would be a very valuable pitcher in the Giants bullpen.
2. Sign Ryan Vogelsong and Chad Gaudin
Ideally, the Giants will have three pitchers battling for the fifth starter job. Vogelsong, Gaudin and Yusmeiro Petit are all viable candidates, with the second place finisher moving into the long reliever role.
3. Sign Matt Garza
Garza pitched 155.1 innings last year, allowing 150 hits and 42 walks, while striking out 136. The Giants need a quality number-three starter and Garza should fill that hole quite nicely.Keys To Success For The Giants In The Offseason by Charles Mager