I am sorry he is so ill and I hope that with all of your good care he will recover.No. I want to breed for myself. To have a self sustaining flock. Since I’m pretty sure they have some CRD I don’t want to risk infecting someone else’s flock.
That being said, I would strongly recommend not to breed him, as whatever had him susceptible to illness might be transferred to his offspring too and you would just multiply the problems in your flock.