Kante has been told he can train at home even if he misses the rest of the season. The correct way to go about it. Went in on Tuesday, expressed concerns and the club have given him time off for now. I'm sure they will keep in close contact and make sure he is okay as this goes on.
Spain had a team where one of the players was very vocal about not wanting to train or play. The manager put him in touch with a psychologist to talk through his worries, then he was given reassurance and has since decided he is happy to come back.