#4 Not buying a striker

Okay, alright, you sell Mariano and Morata… now what? Surely, these two will now be replaced by another striker who can be a proper backup to Karim Benzema, wouldn't they? However, Zidane opted to not sign anyone and this is what most Madrid fans don’t understand even now.
The Frenchman stated that he trusted Mayoral to be a worthy backup to Benzema. But then he rarely plays him. This is inscrutable, to say the least. It is not like Karim Benzema is setting the world on fire with his skills.
In fact, if anything, the former Lyon man’s inability to score on a consistent basis makes it utterly impossible to believe that he is indispensable. However, even after a series of bad performances, Zidane has often chosen Ronaldo as the number 9 instead of letting Mayoral in the team.
If he didn’t trust Mayoral to be the right backup for Benzema, why did he not sign someone in the first place? These are some of the burning questions to which we might never get an answer.