I wonder if there's a degree of misjudgement by De Zerbi. With most non-fan-owned clubs the fans will generally back the manager if he makes complaints about the board, who are generally seen as men in suits and who don't understand the game. I don't think you'll find many/any genuine Brighton...
In social-media parlance I think it means spending someone else's money to pay whatever eye-watering transfer fees the selling club is asking with comitment to pay the player proportionate wages for 4-5 years, all without regard for FFP rules and the long-term financial viabilityof the club.
It all appears to be getting a bit Gus-like with the timing of this moaning coming up to our biggest 2 games of the season. Next thing we know the Roma kit man will be smearing shit over the away changing room bogs and RDZ will write an email to everyone at the club complaining about it.