Don't even get me started on IG-88.
Answer: No. IG-88A went rouge seconds after he was activated, taking his four "brothers" with him. The bounty hunter employed by the Empire is IG-88B, but the other three IG-88s were all plotting a droid revolution, which would have (theoretically) destroyed the Empire.
If IG-88 is involved, he'll be secretly plotting against the Empire from the very start. Seeing as the Sith Empire has more droids, he would probably side with them anyways.
Well, he'd actually plot against both sides as both are incompatibleto his overall goal. Regardless, he's not part of either powerbase so can't be used.