The Rambam holds that it is permitted to have benefit from Gid Hanashe. The Tosfos and Rabeinu Yona have the opinion that it is forbidden. The Gemara in Pesachim seems to follow the latter's opinion. The Gemara brings down those that say that unless the Torah specifically permits it, we assume an Issur exists not to have benefit from anything where the Torah states "You may not eat". Nevaila is an example of something which is permitted to derive benefit from since the Torah permits it to be sold to a Goy.