Bale's agent Jonathan Barnett insists he was "fine" about Zidane's return before discussing their breakdown in relationship last season.
"Gareth wanted to play one way and Zidane wanted him to play another," Barnett told BBC's Football Daily podcast.
"Over the period of time it just got worse."
Barnett suggested Bale has no immediate plans to leave the Bernabeu and will wait to see what the future holds under the returning Frenchman.
"He wants to play all his career for Real Madrid. If it doesn't work out, we will talk again," Barnett added.
"He is very happy. He will talk with Zinedine Zidane and we will go from there.
"If you let him play how he wants to play, and have a run of games, he can be right up there."