As long as they can equip the piece in general, it’s only locked (with the exception of a recent bug I think, with polearm or something) if an aspect or affix on it is not available to the class, and this includes main stats. If you can remove them, then the class can equip it.
This is easy for aspects, but if it’s affixes, there’s nothing you can do if it’s more than one, and if it’s one, that’s the one you have to re-roll so hopefully the other two are actually useful.