Kings injury can obviously be rehabbed, although he’s pretty old so maybe he wants to move on. However, he’s not going to play in the NFL and he loves playing football, so I highly doubt it. Not to mention the very, very strong bond between King and Key, and King and Weinke.
I will say this - it seems like we have a pretty special QB room right now. Every time the cameras cut to the sideline to show Philo, I saw Pyron or King or Knowles supporting him. Especially Pyron - after that INT in the end zone he was right there, obviously helping Philo get through it and put it out of his mind. This is all perception but in the middle of a tight game you can tell a lot from body language and that’s what it looks like to me.