protected function realRemoveUser($nick)
    {
        $collator   = $this->connection->getCollator();
        $nick       = $collator->normalizeNick($nick);
        $key        = array_search($nick, $this->nicks);

        if ($key === false) {
            return;
        }

        $this->ial[$key]['TIMER'] = null;
        if (!isset($this->nicks[$key]) || count($this->getCommonChans($nick))) {
            return;
        }

        unset($this->nicks[$key]);
        unset($this->ial[$key]);
    }