Well, if he was told he would be assistant manager but then wasn't then he probably has some right to feel aggrieved surely. No-one wants to take a job under false pretences.
Course, the fact Arnold was mostly gubbins for us means it's immaterial in the end - but I'd like to think CE is above promising things like that and then not delivering. Be interesting to hear his side of it. Might have just been a simple misunderstanding.