I wanted to respond to this in the pre-game thread, but since that's now closed, I'll do it here. Regarding Nick Caley, the commentators pose a hypothetical concern that his contract expires end of this year and he won't be here long term as he's already indicated a desire to leave (refused by Belichick).
But what was not mentioned by the commentators is that that this is based on his position as the TE coach. If he had been offered the play-calling position, and a contract extension to go along with it, that would have been a different story. There must be more to this story, particularly as we know Belichick values Caley, refusing to allow him to interview with the Raiders.