I doubt he will get anything else than a Death sentence. The Shiites won't accept anything else. In the worst case the execution will be delayed and after collecting the sentences from several other cases he will executed in a "combined" sentence.
Clamp him in leg irons for years in the public square! If there is an appeal process... oh, danged, there probably is..
Quite aside from the facts, if he is guilty of what he has been accused of how can there be any punishment short of death?