Johjima is a FA after this season so i would be suprised to see Clement dealt.
Hernandez from the O's would be a nice pick, but the O's have nobody close with Weiters being 2 years away
It really depends on who and What are the Reds willing to move.
If the Reds are willing to move Baily or Votto, Texas and Seatle both might be interested in moving Clement or Salty. But i doubt that will happen.
If the Reds are after a buy low guy most of those guys (probably excluding Doumit) you named should definately be a viavble choice.
Its just most if not all the buy low canidates are really a dynamic change from what the Reds already have.