The FA will announce their findings next week and Zola hopes for a positive outcome.
"I don't know what is going to come out," Zola told Sky Sports News.
"I believe they listened to us. I believe we've done everything possible to help the FA to find the truth.
"We're waiting and we have faith in the people that are deciding.
"We'll see. As a club we've done everything possible to collaborate to find a good solution."