That gives the minions conversations like 'I'd like to develop in...and I've identified this...and the advantages would be...'
'We don't need that. We need you to do the inputting and filing'
'We can't afford you to take time off for training courses'
'As your manager, I have the sign-off on training and I need you here, so the answer is no'
'You don't have experience in this area.'
'We're too short-staffed.'
'I'm already out on training/secondment, so you have to be here'
'Aren't you being rather presumptious in giving me your proposals? I tell you what we need and what we need is for you to keep doing what you're doing'
'Would love to give you a payrise, but you don't do any tasks at a higher grade. Oh, you do? Well, they're not in your job description, so they don't count'
In short, you've been given your place and you're expected to stick to it and not get ideas above your station.
Apply externally, look at other LAs, find somewhere else.