C) Talk to him, make time so that he —and maybe your other staff— can talk to a psychologist, and promise to retain him through breaks and treatment of that's r

C) Talk to him, make time so that he —and maybe your other staff— can talk to a psychologist, and promise to retain him through breaks and treatment of that's required. In other words, care for him. People have baggage. Help him with his. If your idea is just to move the problem away from the workplace, you're just waiting for the fast it all goes wrong. It sounds like you have a good employee who likes the work, might accept condition of help and be with you a long time... You just have to help them stabilise.