magento2 – Override a helper using Plugin

I have been trying to use plugin to override MagentoSalesHelperReorder.php but I am not sure how and have been stuck with this problem. Basically I am trying to override the function in this helper file. I have added a comment inside the code what I would like to change.

     * Check is it possible to reorder
     * @param int $orderId
     * @return bool
    public function canReorder($orderId)
        $order = $this->orderRepository->get($orderId);
        if (!$this->isAllowed($order->getStore())) {
            return false;

        $currentOrder = $this->registry->registry('current_order');
        if ($this->customerSession->isLoggedIn() || isset($currentOrder)) {
            \WHAT I AM TRYING TO DO - canReorder() change to canReorderIgnoreSalable()
            return $order->canReorderIgnoreSalable();
        } else {
            return false;

How can I do this through plugin?