Santiago Solari has claimed that the copa del rey fixture against Leganes was too important to risk Isco starting the fixture.
Los Blancos won the first leg tie 3-0, thanks to goals from Sergio Ramos, Lucas Vazquez and Vinicius Junior.
Solari had injury problems to contend with, as Benzema and Asensio were out injured, he opted to bring in Isco in the 71st minute.
When asked about his team selection after the game, the Madrid boss told reporters: “There’s 24 players and my duty is to pick the players. It’s not the most pleasant duty.
“Why Isco didn’t play today as starter? Today we made a big game.”