He may well have done so but CH insisted that if the club wanted to leave they sack him, as it was clearly not a mutual decision. He signed a new contract in May 2018 for three years, it will contain payoff sums if the manager is sacked.
Yup, makes sense.
If TB wants to move the goalposts it's his call. He can turn us into a Primark Chelsea if he wants to change managers whenever he's bored too.
Chris Hughton has two years left on his contract so will be secure.