The 53-year-old coach led the Verona club to an 10th-place finish in their first season back in Italy's top flight in 11 years and his current deal expires this month.
"I haven't signed my contract extension yet but by Wednesday we will make official my renewal," Mandorlini said to Gazzetta dello Sport.
"I believe a lot in this project.
"I turned down an important offer to coach in China because my priority has been to remain here.
"Verona is my home and until it lasts, I will not leave.
"Sooner or later I will be sacked but until then I will remain."
Mandorlini guided the Gialloblu to automatic promotion to Serie A last summer and although Verona were widely backed to struggle this term, he has worked wonders with his side winning 16 games this season.
"We've had a fantastic campaign," he said. "Our aim next season will be to again avoid the drop.
"Our mentality should not change.
"This year we have been able to defend our Serie A status well ahead of time and this will our objective next season."