Eden Hazard is another one of Real Madrid's targets for next summer, according to Spanish paper Marca. Zinedine Zidane wants to have the Belgian attacker playing for him and Real Madrid let Hazard know that they will try to sign him next summer if the FIFA ban is lifted after Real's appeal.
It would appear that Real Madrid are also going to try to sign Neymar, but that seems like a very difficult deal. If this same Marca report is accurate, Chelsea would be willing to sell Hazard if a good offer comes their way. Other players like Lewandowski or Paul Pogba are also on Real's shortlist, per that report.
Hazard plays on the left wing and it's clear that Zidane would have to do some changes to adapt him to the lineup if Cristiano Ronaldo ultimately stays with Real Madrid. Hazard has not performed well this season and it's not clear how much he would cost.