Checked their prospect list yesterday. Two of their top 5 are shortstops; those we don't need. Their top three pitchers -- Harrison #2, Whisenhunt #7, Crawford #8 -- are lefties. Outfielders are #3, 4 and 10: Matos, McCray, Brown. A catcher, Bailey, is #12 (Joey Bart, 25, is SF's starting catcher right now, with a career 38% K-rate).
Brandon Crawford, 35, is the obvious name on their big league roster who is probably available and can serve as a reasonable placeholder at short.