The club's former General Manager has pointed out Los Blancos often struggle when the Portuguese is not making the difference for them.
Former Real Madrid sporting director Jorge Valdano feels the Santiago Bernabeu side is over reliant on Cristiano Ronaldo and needs the Portugal international to be at his best in order to be successful.
Ronaldo has netted 33 goals in 31 appearances in all competitions and played a key role in Madrid's 2-0 Champions League win over Roma on Wednesday by scoring the opener.
However, the Portugal captain has faced criticism for not scoring in key matches for Madrid this term and Valdano is uncertain if the current crop can make the difference if Ronaldo is not on song.