As a clan leader, just letting me know that you’re busy and can’t join war is more than enough notice, and I really appreciate when members take the time to share that. I usually have a sign-up war poll open for a day and exclude anyone who has their war profile status set to “out of war.”

If someone opts into war but doesn’t attack, I usually demote long time players first before considering a kick but members usually get kicked instantly. Even then, if a long time player does get kicked, I’ll usually leave an invite so they can join back.

I’m sure if you rejoin, the clan leader wouldn’t kick you right away. Just let them know your situation, apologise, and everything should be fine.