Marcelo, Keylor Navas, Sergio Ramos and Benzema are all available, according to Benítez. Still, are they fit enough to start? Real Madrid need them, so Benítez will most likely take his chances and let them play in Real Madrid's most important game of the 2015/2016 season so far.
Real Madrid: Keylor, Danilo, Varane, Ramos, Marcelo, Kroos, Luka Modric, James, Gareth Bale, Cristiano Ronaldo, Benzema.
Barcelona: Claudio Bravo, Jordi Alba, Jeremy Mathieu, Gerard Pique, Dani Alves; Sergio Busquets, Ivan Rakitic, Andres Iniesta, Lionel Messi, Luis Suarez, Neymar
It would be strange to see Messi on the bench even considering that he has been out for the last 2 months with a knee injury. All things considered, both teams appear to be healthy and ready to go, so neither Benítez nor Luis Enrique will be able to make any kind of excuse after the game.
Expect a game played with a lot of intensity between these two rivals.