will come of
will come of (something)
Will be a substantial or meaningful result of something or some action. Often used in negative constructions or with mitigators like "very little." Our political opponents have won a minor victory, but very little will come of it in the end. I just don't think much will come of this internal investigation.
will come of something
will result from something. I don't think that much will come of this. Nothing at all will come of it.