McDaniel was asked again about Byron and he said that he is not counting on him to return this season. So, that all but closes the chapter on Byron's Miami career.
Alternate theory: Quiet quitting. He never plans to play another snap for the the Dolphins or any other team. He is 30. After getting injured and surgery he did decided to hang it up, he called his agent who explained to him if he retired now he would have to pay back much of his signing bonus. Agent tells him if he shows up to camp is put on PUP he will keep collecting his salary if he keeps saying he is too hurt to play they will keep him on PUP and eventually cut him relieving him of owing the signing bonus back and collecting his salary along the way.
It's looking more and more like Hoodie is right on the money here.