The trip to Vallecas is being quite difficult for Real Madrid, as Los Blancos are trailing 2-1 after 45 minutes.
Furthermore, Karim Benzema left the game with what appeared to be a knee injury and is likely questionable for Tuesday's Champions League match against Manchester City.
If Benzema isn't available next Tuesday, Zidane will have some tough decisions to make as he doesn't have a pure replacement on the roster. Jesé could play as the main striker (as it's happening right now) or Cristiano Ronaldo could play in the center of Madrid's offensive line as well if he's finally available.
Benzema will have two days to recover and try to be ready for Tuesday's crucial match, a game that will most likely decide whether Madrid win a trophy this season or not, given that the victory against Rayo today seems rather difficult.
Zidane will give an update on Benzema's condition during the post-match press conference.