what's that button for ?

Attachment 36282 Can someone tell me what's that button on far right ?
Thanks

It is troops you have received from a clan which you don't belong in anymore

If you are implying that grey thing that looks somewhat like a plunger, that is the clan castle when you are not in a clan.

If you took away the clan badge, that's what it would be like ;)

Thanks, I didnt want to risk hittin it cause i didnt know what it actually do,
but it's clear now.
have a good clash