No its certainly his managerial skills. Guys quite a decent chap outside of football. Does a lot of good work.
In football though hes too big for his boots. He will likely have a rant about Roman and Terry and have a power struggle with Chelseas board. Its how he rolls.
Being too big for your boots is nothing to do with managerial skill.
I take it you're trying to scare Chelsea off so that he can replace SAF.