Graham Potter will know modern managers stand or fall by how they deal with their club owners.
He failed spectacularly at Chelsea by allowing Todd Boehly his trolley-dash in the transfer market - whereas Enzo Maresca made it clear from day one which players he wanted, even if meant big acquisitions like Raheem Sterling being jettisoned.
Now Potter faces the same dilemma at West Ham following Saturday's disastrous 3-0 defeat at Sunderland, as damaging to the East Enders as it was glorious for the Premier League newbies.