Crowe did a fine job as Jor-El in Man of Steel, so it certainly wouldn’t be a bad idea to consider bringing him back for future Superman films.
Still, Crowe was seemingly originally under the impression that Warner Bros. would make more Superman films prior to a film like Batman V Superman.
Getting Man of Steel star Cavill to return for more films has not been the issue, as Cavill has expressed his willingness to work with Warner Bros. in making more Superman solo films.
Still, with Clark Kent’s presence and storyline generally regarded as one of the weaker elements of Batman V Superman, it’s hard to imagine another Man of Steel film being thrown into the mix anytime soon.