It's still very early to confidently predict that El Nino will return later this year.  While some forecast models, including all of the models in the North American Multi-Model Ensemble (NMME), many other models do not redevelop El Nino nor do a fair number of statistical techniques.  At this point, the official forecast provides about a 50% chance of El Nino developing later this year, but that also means there's a 50% chance it won't develop.