#1 Cristiano Ronaldo
As one who loves to be in the spotlight, Cristiano Ronaldo may upstage Zidane's resignation by leaving the club himself. Ronaldo has continuously hinted at leaving Real Madrid and with the departure of Zidane he may feel the time is right.
Zidane found a way of keeping Ronaldo's ego in check, despite resting him for a few matches in order to preserve him for the more critical matches of the season. Zidane also spoke to the media in glowing terms about Ronaldo, heaping praise upon the Portuguese superstar even in parts of the season when he was struggling.
Ronaldo has excelled under the guidance of the Frenchman, claiming successive Ballon d'Or awards. Zidane's departure now leaves Real in a tricky situation, needing to start over under a new face at the helm, and Ronaldo may not stay long enough to see what the future holds.