According to John Fay, the Giants are interested in Edwin Encarnacion. Fay puts Easy Eddy as the most like Red to be traded, followed by Homer Bailey.
Who might we get back? I wouldn't mind seeing Fred Lewis come back to the Reds in a trade. I saw him late in the year in '08 at the GAP and thought he looked good. He hit .282/.351/.440 last year with 9 hr's and 40 rbi's with 21 sb's in 28 attempts. He struck out 124 times in 133 games, which is too much, but still managed 51 walks and a .351 OBP.
Randy Winn is the same player (.306/.363/.426, with 25 sb's in 27 attempts and a 59/88 BB/K ratio), only proven over time and more expensive. He will earn $8.25 mil. in the final year of a three year contract. Lewis is still around the major league minimum and will be under club control for some time.
Of course, Lincecum and/or Cain would be nice, but right-handed starter is not a place where we want to be putting our resources.