He was awful basically everywhere. Perugia, Piacenza...
Yes and he has a terrible temperament anyone whose worked with him knows how chaotic and disorganized he can be throughout his career that's why it almost always ends in discord. He's not the worst but far from the top.
I get why that user who is clearly biased says that, he is also revered by some locals because he's a role model nonno and in Italia no one questions nonnos lol