Ivory is one good RB even though he was now drafted. Look at Adrian Foster, he was not drafted. I know that the Saints need more picks but let don't give away. I am not saying that Ivory is as good as Foster. Just making a point.
The only way that I can see Saints dealing Ivory for a 5th rounder is if the Saints and the Jets swap 1st round picks.
The Jets still have 2 1st rounders and Ivory. The Saints get a better 1st round pick and an extra 5th round pick.
Personally I wouldn't trade him for less than swapping 1st rounders and a 3rd rounder.
The only way that I can see Saints dealing Ivory for a 5th rounder is if the Saints and the Jets swap 1st round picks.
The Jets still have 2 1st rounders and Ivory. The Saints get a better 1st round pick and an extra 5th round pick.
Personally I wouldn't trade him for less than swapping 1st rounders and a 3rd rounder.