"Xavien Howard signed a 5 year, $75,250,000 contract with the Miami Dolphins, including a $7,000,000 signing bonus, $39,260,641 guaranteed, and an average annual salary of $15,050,000. In 2021, Howard will earn a base salary of $12,075,000 and a workout bonus of $25,000, while carrying a cap hit of $13,500,000 and a dead cap value of $16,275,000."
Let's not act like he is woefully underpaid or that he signed a bad contract. We can't afford to part ways with him this year nor can we afford to pay him more (without cutting/restructuring others which hurts the team going forward). Is appeasing Howard (so he stays) worth cutting Ogbah and McKinney?
So it is not as simple as "just pay the man". If it was it would have been done. At the end of the day X isn't Revis and the Dolphins shouldn't allow him to treat them like Revis did the jets (and others). I suspect if X was given permission to seek a trade he would find the market is a long ways from what he feels he deserves.