I think I know what you mean if you are thinking trades for Salmons in return for a PG.
Let me see.
I think the list would be:
Mike Bibby
Mo Williams
Raymond Felton
Kirk Heinrich
Randy Foye (he's actually showing some potential this year)
Nate Robinson
Jameer Nelson
Andre Miller
Okay, I lost interest in finishing the list. Of course, not all of these (if any at all) players are available. However I would think that in terms of comparable ability for two different positions that those players would be about on the same level as Salmons.