I genuinely think Mou resents AW because he simply doesnt know how to act with decorum and class, and goes entirely the other way in some kind of rebellion against Arsene's pure decency. A psychologist would have a field day with these insecurities.
End of the day, when Roman is giving Mou 15 minutes to clear out his desk in May, and Mou is wondering if Inter Milan are hiring, Wenger will still just keep ignoring him.