Real Madrid coach has admitted that the gap that was left by Cristiano Ronaldo cannot be easily replaced even by Eden Hazard.
Los Blancos are reportedly preparing to splash £100million to get the services of the Chelsea star.
Madrid are increasingly confident Hazard will join them this summer to usher in the second Zidane era.
Los Blancos have even reportedly started house-hunting for the Belgium international in the posh district of Pozuelo.
The Chelsea ace only fuelled speculations when he admitted he was happy to see Zidane returning to the Bernabeu less than a year after parting ways with the club.
Zidane has been a long-term admirer of Hazard and has insisted on bringing the winger in.
Madrid are desperate to sign a star player as they have been struggling since Ronaldo moved to Juventus last summer.
Los Blancos will finish the season trophy-less as they are 13 points behind league leaders Barcelona in La Liga with six games to spare.
Their arch-rivals also knocked them out of the Copa del Rey after Ajax humiliated Madrid in the Champions League, beating them 4-1 at the Bernabeu in February.
Hazard has scored 19 goals and added 12 assists this season, proving he is the kind of player the Spanish giants are after.
But Zidane claims that whoever joins Los Blancos this summer, won’t be able to have the same influence as Ronaldo did in his nine-year spell at the club.
Zidane said: “The problem is that Cristiano [Ronaldo] cannot be replaced.