If Ginger Fox's come back failed, iCarly would be made the scapegoat by the singer's manager.
Leslie probably doesn't like Ginger Fox much, due to the fact she pushes him around and throws forks at him.
Leslie is Ginger's Manager. He has been her manager for a while, although it is unclear exactly how long.
Leslie seems to hate the iCarly trio, due to the fact he puts iCarly in charge to make Ginger Fox her comeback, but if they failed, Ginger will blame them for their failure of her comeback.